Talk:Circulatory system/Archive 1

circulatory v lymphatic
It isn't clear whether the article is trying to say whether the two systems should be regarded as the same or different in the second paragraph. The writer says that the systems are often seen as unified, but then immediately begins to say how they are different without any qualifier or transition. This probably needs to be cleaned up.

Circulation
Why is there a (good) article on the circulatory system, and a (somewhat messy) article on circulation (Physiology)? If one insist on having both, shouldn't the last one be reduced to a short definition?--Ekko 08:48, 20 Feb 2005 (UTC)

Checking what links hkjjkll;j;ere on both articles, it seems there is enough to have two articles, one for the human.....cirulatory system, the other for animals in general. -- 70.2dick8.153.5 20:50, 20 Jun 2005 (UTC)


 * I agree. That's about the same idea discussed in mammilian circulation topic below. --TheLimbicOne (talk) 21:02, 29 January 2006 (UTC)

Someone has gone and put some kinda hack I havent figured out in this section: just says "Hi!!!" after wats happening the header. Not at all harmful, but could do with getting rid of.

merge: open circulatory system
Merge completed by Tarret 16:19, 2006 January 15

I'd like to either pull this info out to the article on open circulatory system or merge the open circulatory system article into here. --TheLimbicOne (talk) 17:58, 5 January 2006 (UTC)
 * Maybe. I bigger problem with the scope of the article is IMO - where is the more detailed description of the more advanced closed circulatory system, i.e. mammals and similar? That is what I expect fo find when I click the link to this article - a good overview if somewhat scetchy of heart, veins, arterys etc. That paragraph is pretty dense for laymen. Until there is a good overview of human/mammalian circulatory system I find it hard to decide whether the open circulatory system should have its own article or not. / --Habj 20:32, 6 January 2006 (UTC)
 * Oh absolutely there's enough info on both subjects for them to be their own articles. I just don't have my hands on that info to add right now. I'm actually leaning towards pulling "open" out of here and leaving a link. Then I'll fix all article links to here that really need to go to "open" instead. If I merge, I'd mark the open section as a stub section. --TheLimbicOne (talk) 00:41, 7 January 2006 (UTC)

Mammilian circulation
All of the articles referenced in this section are stubs. Would anyone object to collecting them into this section of this article. This may enlarge this section enough to qualify as its own article. --TheLimbicOne (talk) 23:23, 28 January 2006 (UTC)
 * Good idea--Ekko 12:06, 29 January 2006 (UTC)

Stages of evolution
The systems of fish, amphibians, reptiles, birds and mammals show various stages of evolution. This sentence is a bit vague. Does it mean that the systems of the animals show increasing complexity or that they how one evolved from the other? PrometheusX303 18:44, 22 February 2006 (UTC)

Michael Servetus info
Why is it relevant to this article that Servetus was executed for heresy? --Dcfleck 21:00, 26 February 2006 (UTC)

The reference to Servetus’s execution was simply a brief parenthetical digression. And given the historical significance of this particular execution, especially as it relates to the development of Western civilization's history of tolerance among those with differing beliefs and opinions, I thought it was justified. If however, this kind of digression is not considered appropriate for Wikipedia articles, then of course, it should be deleted. Being new to wikipedia am not always sure what is, and is not correct. So, I definitely welcome advice and constructive criticism. Delta x 02:42, 5 March 2006 (UTC)

I am confused why the mention of Cardiovascular system is mentioned in the beginning of the article as another word for Circulatory system when it is only one of many systems of circulation in the human body, I changed the first marks to more often because of what my Human Biology proffessor said during class. --134.29.242.57 21:15, 28 June 2006 (UTC)

Open Circulatory System Heart
How does the heart work in the open circulatory system? Wouldn't it just pump in circles near the heart? --Gbleem 15:50, 28 August 2006 (UTC)

cool

Cava
Mention what "cava" means. Jidanni 13:12, 15 July 2007 (UTC)

Formatting
Is there a reason why this page is formatted in those box-esk things, as opposed to the style of most other pages? It seems rather difficult to read without text-wrapping. GromXXVII 12:24, 17 July 2007 (UTC)

Why my edit
I put humans above more primitive organisms, since it probably is the most interesting species to get to know the circulatory system of. Just because the system of other species are more simple, the system of humans is still more efficiently learned by simply studying it and no else.

I also moved a lot of duplicate information to the articles Systemic and Pulmonary circulations, since it's easier to improve and correct one main article than several duplicates. Mikael Häggström 14:41, 14 October 2007 (UTC)

diagram
This article needs a diagram of the main sections of the heart... and the lung flow. The picture it has at the moment is not labeled.


 * I have created a tubemap of the circulatory system at http://www.magma.ca/~shawnhcorey/200710/1193774664.html . I did this because I thought it would be a fun thing to do. There are three versions of it:  a small PNG, a large PNG, and a SVG.  The SVG was created using Inkscape http://www.inkscape.org/ and has advance features; it may not be viewable with your browser.  Some of it is not labeled, I couldn't label the interior of the heart, there was no room.  It is a very simplistic diagram but more advance then anything I see on the page.  It is copyrighted and available under the Creative Commons Attribution-Noncommercial-No Derivative Works 2.5 Generic http://www.magma.ca/~shawnhcorey/cc-by-nc-nd.html .  I don't know if you can use it; I am presenting it as an option.  Shawncorey 04:00, 1 November 2007 (UTC)

Picture Problem
The illustration is misleading in this article. The lungs are part of the pulmonary system, not the cardiovascular system. The cardiovascular and pulmonary systems together make the cardiopulmonary system. That is why I am deleting the picture. --Savant13 16:18, 23 April 2007 (UTC)

The lungs are part of the Respiratory System, and they play an important enough part in the Circulatory System to be included in the picture. —Preceding unsigned comment added by 67.169.98.50 (talk) 02:44, 19 December 2007 (UTC)

Blue Blood Misconception
Please, please, please, I beg of you, put a section stating that deoxygenated blood is not really blue, that is just the standard for diagrams that has been used for centuries. I train science teachers and hear this misconception all of the time. I'd be happy to offer my misconception podcast on this subject as one reference for this section: http://scienceinquirer.wikispaces.com/misconceptions On that page, I also have a picture of red food coloring viewed through diluted milk (very similar to skin) and it appears blue. Scitch (talk) 20:45, 1 February 2008 (UTC)

Blue blood
Just to let you know that the concern of yours has a place on Wikipedia. --Ludvikus (talk) 13:23, 23 April 2008 (UTC)
 * But it's only a disambiguation page. My recollection is that it's a racist term or notion as in "blue blooded American." As such, though, it has no place in a science article. Why not start a separate "stub" on it? --Ludvikus (talk) 13:28, 23 April 2008 (UTC)

Circulation
So blood only flows in arteries, veins, capillaries, etc.? Then what occupies the space between blood and the skin? 63.23.47.35 22:08, 21 July 2006 (UTC)


 * Usually fat, muscle, or other tissue I would expect. Unless you mean the vessel wall, which in that case, would be the vessel wall. Wafulz 23:16, 21 July 2006 (UTC)

So when you get cut, how come fat or lymph fluids don't flow out instead of blood? QuizQuick 00:29, 24 July 2006 (UTC)


 * It does - well, not fat because it's not particularly conducive to flowing. Our circulatory systems are simply extensive enough that virtually anywhere you are cut will bleed. There are, however, some exeptions - very small surface abrasions and scratches sometimes do not bleed, but instead are moist with a clear fluid: lymph. —Preceding unsigned comment added by 70.72.11.85 (talk) 04:04, 6 September 2008 (UTC)

When you get a skin cut, the blood coming out of it is usually from the capillaries, as many are very small. —Preceding unsigned comment added by 200.196.247.195 (talk) 21:39, 7 November 2008 (UTC)

The circulatory systems
1].funtion-How blood moves through the body. 2].Things you mite want to know going down the human body- Heart-pumps blood, Arties-pumps blood away from the blood, Veins-carry blood back to the heart, capillaries -are the red lines you see in your eyes. 3].it goes from the mouth ,to the esophagus,to the stomach to the small and large intestines, last the rectum. red blood cells-makes up 8 percent of your total body mass, white blood cells- makes up 8 percent of your total body mass. platelets-help stop bleeding plasma-liquid part of the blood 4].TWO SYSTEMS THAT WORK TOGETHER with the circulatory are a].exceretory b].restpirtroy 5].2diseases a].cardiovasular b]. heart failure c].the two upper chambers are called the right to left affriums. d].the two lower chambers are called right to left ventricles. —Preceding unsigned comment added by 168.12.253.66 (talk) 18:27, 9 February 2008 (UTC) hangag royale —Preceding unsigned comment added by 203.131.152.78 (talk) 00:55, 15 October 2008 (UTC)

huh? —Preceding unsigned comment added by 122.55.199.7 (talk) 10:11, 14 January 2009 (UTC)

Vandalism in the "Open circulatory system" section
The section started with "HELLO!" written in big red font. I removed it, for it was clearly vandalism.--Crabby 20:52, 9 February 2007 (UTC)

I'm very new to actually editing but it appears that there is some irrelavent content under Open circulatory system about veins and arteries. Check the last paragraph or so... Is it fine to just go and delete something like that? 75.69.85.228 (talk) 15:35, 25 March 2009 (UTC)
 * Go ahead! Be bold! --Asav (talk) 12:10, 7 May 2009 (UTC)

Drawing
Made a more accurate drawing, could need some minor fixes dough. The file is: File:Circulatory_System_en.png, also shown below; perhaps if updated some more and renamed to .svg, could replace older image 87.64.62.124 (talk) 12:26, 15 January 2010 (UTC)

Merge
Mering affects-of-Blood-preasure-on-energy-level-or-some-other-rediculously-long-title into this article. what is merge Banana04131 01:20, 11 October 2005 (UTC)

More merge!!! Why don't we merge systemic circulation and coronary circulation? Coronary circulation is also considered as systemic circulation, so what IS the point of separating coronary from systemic? PrimroseEverdeen 10:47, 2 September 2010 (UTC)

What does this system do?
What functions does it perform to be vital in the human body?--Josue Ramirez 23:01, 3 April 2007 (UTC)Jramirez23 The circulatory system takes blood containing nutrients and oxygen to the body's organs/ muscles/etc. Is that what you were wondering about? Asyuli4211 (talk) 14:56, 26 January 2011 (UTC)asyuli4211

2 Nonhuman: * 2.1 Other vertebrates
I was reading in the section and I found that the description of the reptiles circulatory system may need some re-wording to make it an easier, understandable read. Does anyone see how we could improve clarity?Asyuli4211 (talk) 15:01, 26 January 2011 (UTC)asyuli4211

Egregious Error Concerning Heart's location and heart beat
The section marked 'Closed Cardiovascular System' under the heading 'Human Cardiovascular System' states the following: ' The heart is located in the center of the body between the two lungs. The reason that the heart beat is felt on the left side is because the left ventricle is pumping harder.' This is simply incorrect.

The heart is indeed on the left side of the body (the left lung is considerably smaller as a result; 2 lobes verses 3 in the right.). It is true that the left heart contracts with greater force than the right, but the 'right' and 'left' hearts actually sit in what is more accurately described as an 'anterior' and 'posterior (left and right, respectively) orientation. You can ask any anatomist this and they will agree. The heart is 'felt' in the left thorax between the 5th and 6ths ribs (generally) at the mid-clavicular line (near the nipple, in men) because this is where the apex of the heart essentially bumps upon the thoracic wall when it contracts. The base of the heart is considerably medial, but it projects to the left in an infero-lateral direction to the apex which is quite left-lateral of the sternal midline and this is why the heart is felt on the left side of hte body. Because it is in the left thorax.

I could cite any number of anatomy, physiology and/or cardiology texts, but I dont feel i need to.

Signed,

ECW —Preceding unsigned comment added by 76.97.209.133 (talk) 18:55, 27 March 2011 (UTC)
 * I've removed the sentences in question. Thanks for bringing it up. mgiganteus1 (talk) 18:59, 27 March 2011 (UTC)

almost childlike article
The cardio vascular system does not deliver nutrient TO cells. It distributes nutrients to all parts of the body where for the most part the leave the cardio vascular system and enter the interstitial fluid (which is indistinguishable from "lymph"). Nutrients are absorbed from the interstitial fluid and waste products excreted into the interstitial fluid where some of them are exchanged back into the cardio-vascular system and others are collected into lymphatic veins, filtered through lymph nodes, and then dumped back into the cardiovascular system near the core.

The lymphatic system does not and never "distributes" lymph, it collects it. The lymphatic system is important because many blood components such as tri-glycerides are too bulky to pass through capillaries and therefore are collected into lymph veins and put into circulation in the hepatic vein. When humans ingest fats they pass from the intestine directly into the interstitial system and are routed to the liver by passing through the lympatic veins into the hepatic (liver) vein.

The cardio vascular system is special in that it is pressurized (because it is mostly closed) and it distributes as well as collects. The lymphatic system is driven almost entirely by incidental motion and hydrostatic fluid pressure.

The old idea of the Artery-Vein-Heart "circulatory system" is just a relic. 76.126.215.43 (talk) 01:43, 9 May 2011 (UTC)+++++++++++++++++++++++++++++++++++++++

Edit request from Anatronica, 17 June 2011
I do not know what is the procedure to get a site listed in the external links section. There is one good site that deals with anatomy of the circulatory sytem, i would like to include it here, it is completely free. Take a look and let me know. It's better than others already listed, in fact, first one in the list is not available any more. Thank you! Site is: www.anatronica.com

Anatronica (talk) 14:44, 17 June 2011 (UTC)


 * Red information icon with gradient background.svg Not done: Link is to a company trying to sell something, not an article/report on a relevant topic. Avic ennasis  @ 17:22, 16 Sivan 5771 / 18 June 2011 (UTC)

What should this page be called?
Should the page be called the "circulatory system" or the "cardiovascular system"? Snowman (talk) 21:37, 29 November 2007 (UTC)


 * Circulatory. Cardiovascular would be better in a more advanced article. Most people looking for this page would go for "circulatory." I have no proof of this but, why make things more complex than absolutely necessary? 74.128.56.194 (talk) 02:52, 18 June 2011 (UTC)

The Chinese knew about blood circulation before Western world.
Dear Wikipedia contribuitors, I have just watched the Discovery Civilization episode stating that the Chinese knew about blood circulation before the Western world. A quick web search shows that even high school kids know nowadays that (See for instance "http://library.thinkquest.org/23062/blood.html#"). Can anyone with more experience/credentials add this fact?

Thanks in advance.

George Rodney Maruri Game (talk) 21:54, 10 July 2011 (UTC)

Misuse of sources
This article has been edited by a user who is known to have misused sources to unduly promote certain views (see WP:Jagged 85 cleanup). Examination of the sources used by this editor often reveals that the sources have been selectively interpreted or blatantly misrepresented, going beyond any reasonable interpretation of the authors' intent.

Please help by viewing the entry for this article shown at the page, and check the edits to ensure that any claims are valid, and that any references do in fact verify what is claimed.

I searched the page history, and found 15 edits by Jagged 85 (for example, see this edits). Tobby72 (talk) 00:44, 24 January 2012 (UTC)

Nicotine section
I removed the following section:


 * The effects of nicotine on the cardiovascular system
 * Nictotine decreases the allowance of the airways and the red blood cells have a higher affinity for CO; so less oxygen can be passed causing difficulties in breathing. It raises the blood pressure and heart rate which contribute to making the platelets stickier. Platelets are elements within the bloodstream that recognize and cling to damaged areas inside blood vessels. Platelets trigger a series of chemical changes that result in the formation of a blood clot. This decreases the amount of blood flowing to the other parts of the body and the blood vessels then constrict.

The first sentence doesn't make much sense, this seems to be part of an article on smoking. I don't see any reason to include a special section about one specific chemical in an article when the article doesn't even explain what blood pressure is, let alone what vasoconstriction is, what the role of neurotransmitters is and so on... Ssscienccce (talk) 20:18, 21 April 2013 (UTC)

Apart from that, I notice that the article doesn't explain the difference between veins and arteries. Seems the article needs a lot of work, frankly.. Ssscienccce (talk) 20:31, 21 April 2013 (UTC)

References?
The reference section needs some work. The only book referenced is rather sketchy; seems to be more about history than about medicine. Maybe but it has some information. Besides im learning about the circulatory system in science not medicine.\

OK I'll work on thisBakerstmd (talk) 18:20, 2 April 2014 (UTC)

Abstract illustration of circulatory system from Blausen
Among the recently donated heart-related images from Blausen was the image to the right, giving an abstract representation of the human cardiovascular system (left/right are the lungs, with oxygenation shown as a blue-to-red color transition, while top/bottom are the head and body, with oxygen depletion shown by a red-to-blue color transition, with the heart in the center). However this article already has a lot of illustrations for the human circulatory system, so I wasn't sure where it could go or if it was useful. If you think it's useful please help to insert it. Thank you! Dcoetzee 09:35, 1 July 2013 (UTC) by:kyla — Preceding unsigned comment added by 222.127.85.203 (talk) 01:21, 18 October 2014 (UTC)

Proposed merge with Systemic circulation
Duplicate scope, no need for numerous articles dividing up the circulatory system in different ways when one article will do. Tom (LT) (talk) 04:11, 20 December 2014 (UTC)
 * ✅ BakerStMD  T&#124;C 17:16, 15 January 2015 (UTC)


 * Comment: It's not clear what rationale is being used here. If systemic circulation is to be merged, then would not the same rationale apply for merging other subarticles, such as pulmonary circulation and double circulatory system? Where would the line be drawn? What about bronchial circulation? Or coronary circulation? --Epipelagic (talk) 23:05, 15 January 2015 (UTC)


 * Comment: If systemic circulation is merged, then I would also suggest merging Pulmonary Circulation, as they are the two types of circulation in humans. I agree with Epipelagic - if this Systemic Circulation is merged, then we should aslo merge the many other related articles. Awesomeshreyo (talk) 20:04, 27 January 2015 (UTC)


 * ✅.  Leonardo da Vinci Talk  15:51, 2 March 2015 (UTC)

✅
 * Support – The little extra detail of Systemic circulation can be easily added to the corresponding section in this article. Most of the text is redundant and sections like Capillaries offer general information, not exclusive for the systemic circulation. About the comments above, I think that we should treat articles separately and see if a split is appropriate or not – merging Systemic circulation doesn't mean that we have to merge all those articles. --Tilifa Ocaufa (talk) 00:52, 3 March 2015 (UTC)

Semi-protected edit request on 3 October 2015
Add crocodilians to the "birds and mammals show complete separation of the heart into two pumps" part of the page. 41.142.173.59 (talk) 16:55, 3 October 2015 (UTC)

41.142.173.59 (talk) 16:55, 3 October 2015 (UTC)
 * Yes check.svg Done Thank you. --Stabila711 (talk) 02:21, 4 October 2015 (UTC)

Listed external source not working
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookcircSYS.html

This is the link that is being redirected to if you try to open the second link that is listed under "External Sources" under the name "The Circulatory System". It is showing "404 - File or Directory Not Found". --RachitTheGr8 (talk) 10:43, 8 August 2016 (UTC)RachitTheGr8

Semi-protected edit request on 5 September 2016
36.84.141.41 (talk) 13:20, 5 September 2016 (UTC)
 * Red information icon with gradient background.svg Not done: This is not an edit request. Topher385 (talk) 13:24, 5 September 2016 (UTC)

Diana McSherry
Please add to the history section:

In the 1970s, Diana McSherry developed computer-based systems to create images of the circulatory system and heart without the need for surgery.

Thank you. --122.108.141.214 (talk) 03:22, 28 November 2016 (UTC)


 * Done! --Tagishsimon (talk) 03:46, 28 November 2016 (UTC)

Semi-protected edit request on 13 December 2016
Please change the animated GIF of the circulation of a red blood cell and the caption, "An animation of a typical human red blood cell cycle in the circulatory system. This animation occurs at real time (20 seconds of cycle) and shows the red blood cell deform as it enters capillaries, as well as changing color as it alternates in states of oxygenation along the circulatory system."

The assertion that human red blood cells take on average 20 seconds to complete one cycle of circulation is incorrect. The average human blood volume is about 5L and the average cardiac output is about 5L/min, so the average circuit time for a red blood cell is 1 minute. Actually, because the circuit down to the foot (shown in the GIF) is one of the longest pathways a RBC can take, the time is probably much longer than 1 minute, since 1 minute is just an average time. User96384 (talk) 17:57, 13 December 2016 (UTC)


 * Red information icon with gradient background.svg Not done: please provide reliable sources that support the change you want to be made. 🔯 Sir Joseph 🍸 (talk) 20:52, 13 December 2016 (UTC)

The references I cited are as follows: The first reference states that the average circulation time for blood is about 1 minute. The second reference states that the average blood volume in an adult is 4 to 6 L, and the third reference states that the average cardiac output in an adult at rest is 5L/min. — Preceding unsigned comment added by User96384 (talk • contribs)


 * ✅: image caption clarified.  Paine Ellsworth   u/ c  08:01, 19 December 2016 (UTC)

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Semi-protected edit request on 13 March 2017
Please change The cardiovascular (from Latin words meaning "heart" and "vessel") system comprises the blood, heart, and blood vessels.[3] The lymph, lymph nodes, and lymph vessels form the lymphatic system, which returns filtered blood plasma from the interstitial fluid (between cells) as lymph to The cardiovascular (from Latin words meaning "heart" and "vessel") system comprises the blood, heart, blood vessels[3], lymph, lymph nodes, and lymph vessels form the lymphatic system, which returns filtered blood plasma from the interstitial fluid (between cells) as lymph. 67.230.33.160 (talk) 20:29, 13 March 2017 (UTC)
 * Red information icon with gradient background.svg Not done: Your proposed wording seems ungrammatical and confusing. Maybe you misstated it? Rivertorch   FIRE WATER   03:19, 14 March 2017 (UTC)

Navbox Anatomy of the heart
The navbox Heart anatomy which is included in this article does not have Circulatory system as one of its navigation links. I am not part of the relevant project, so I hesitate to edit the navbox. &bull; &bull; &bull; Peter (Southwood) (talk): 05:07, 3 June 2017 (UTC)
 * I just checked, and this seems to be a problem with most of the navboxes in the article. It is clear that thy are appropriate, so I will fix them. &bull; &bull; &bull; Peter (Southwood) (talk): 05:14, 3 June 2017 (UTC)

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Subject

 * It's not clear what is the subject of the acticle, as "circulatory system", "cardiovascular system" and "vascular system" are all mixed together. Cardiovascular system and vascular system are sub-categories, not synonims. Shcha (talk) 19:17, 1 November 2017 (UTC)

=
 * The article is unbalanced, as most of it is devoted to human circulatory system (both cardiovascular and lymphatic), which should be a separate article. What's worse, this bias is implicit and not reflected in section headers. Section "Cardiovascular System" starts with "The essential components of the human cardiovascular system are", as if there is no other cardiovascular systems than human. As a consequence, section "Other animals" looks out of place. Animals other than what? Shcha (talk) 19:17, 1 November 2017 (UTC)

Semi-protected edit request on 7 November 2018
bypass surgery has to do with the circulatory system. it is necessary when one of the veins or arteries in the system becomes clogged (usually by plasmids which are in charge of blood clotting) and therefore is rendered useless. the word bypass means to pass over so this surgery takes a vein from either the leg or another place on the heard and attached it to allow the blood to continue to flow around the clot 207.89.46.244 (talk) 19:34, 7 November 2018 (UTC)
 * Red question icon with gradient background.svg Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. &mdash; KuyaBriBri Talk 19:50, 7 November 2018 (UTC)
 * Coronary artery bypass surgery is already linked within the article. Unless we're adding descriptions of the myriad other surgical procedures that can be performed on the circulatory system, I don't see this as an appropriate addition to this article. &#8209;&#8209; El Hef  ( Meep? ) 20:04, 7 November 2018 (UTC)

circulatory system
How do the deoxygenated blood moves ???? Tanya1023 (talk) 15:58, 10 February 2019 (UTC)
 * Red question icon with gradient background.svg Not done: The answer is in this section, but the talk page is not for answering questions that can be obtained in the article or its sources, such as a medical textbook or summary review on the circulatory system, such as this. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. --Zefr (talk) 17:00, 10 February 2019 (UTC)

Semi-protected edit request on 21 November 2019
The picture to the right of the "Arteries" section appears to be incorrect. On top it has the text "Pulmonary artery" as part of the "Veins" group, and "Pulmonary vein" as part of the "Arteries" group. 50.79.1.225 (talk) 20:39, 21 November 2019 (UTC)

✅ - correct. The image is mislabeled, as you say, and does not convey unique information used to support content. I removed it. --Zefr (talk) 20:50, 21 November 2019 (UTC)

Open and closed circulatory systems need better explanations
The sections titled Open circulatory system and Closed circulatory system each say some things about the two types of systems.

But they neglect to say what makes an "open" circulatory system be classified as "open", or what makes a "closed" circulatory system be classified as "closed".

This is a serious omission. I hope someone knowledgeable about this can improve those sections.173.166.233.97 (talk) 17:12, 30 December 2020 (UTC)

I agree that they look confusing and incomplete think I may have improved this a bit Zagubov (talk) 21:06, 30 December 2020 (UTC)

Semi-protected edit request on 27 January 2021
The circulatory system is the most important system in the human body. It carries oxygen to and from the heart and blood throughout your entire body. 2603:800C:1500:2640:41F0:A296:6F96:7AAC (talk) 00:57, 27 January 2021 (UTC)
 * Red question icon with gradient background.svg Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. ◢  Ganbaruby!   (Say hi!) 01:18, 27 January 2021 (UTC)

Expanding sections
The surgery and society and culture sections have been tagged as needing expansion since 2015. I'll expand those. New Sheriff in Town (talk) 22:23, 22 March 2021 (UTC)

Unit of measurement
When reading the article, I noticed the following sentence is primarily using an imperial unit of measurement: “An average adult contains five to six quarts (roughly 4.7 to 5.7 liters) of blood, accounting for approximately 7% of their total body weight” Specifically the use of quart. My understanding is that quart is largely of American use these days. Could this section of the article be updated to use litres rather than quart as the litre is used much wider across the planet and in the scientific community? Esde84 (talk) 18:32, 13 June 2021 (UTC)

Semi-protected edit request on 21 December 2021
Hey, in the first paragraph describing the human circulatory system, the word "permits" is used erroneously in place of "permeates". 303elliott (talk) 02:12, 21 December 2021 (UTC)
 * Red information icon with gradient background.svg Not done: The word "permits" is correct. Danski454 (talk) 02:22, 21 December 2021 (UTC)

Wiki Education Foundation-supported course assignment
This article was the subject of a Wiki Education Foundation-supported course assignment, between 28 January 2019 and 17 May 2019. Further details are available on the course page. Student editor(s): Kaynat08.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 17:44, 16 January 2022 (UTC)

Defining the circulatory system
Before a couple of recent edits by Iztwoz, the introduction of the circulatory system article said the circulatory system includes the lymphatic system. It also says "the circulatory system, also called the cardiovascular system." The introduction of the lymphatic system article said that the lymphatic system is part of the circulatory system and that "unlike the cardiovascular system, the lymphatic system is not a closed system." It still says it's not a closed system.

I think Iztwoz's edits have helped. Before she made them, a person might wonder: "If the circulatory system is closed (which we know that it is), then how can the lymphatic system, which is open, be a part of it?" It looks like Wikipedia attempted to get around this by calling the circulatory system "the cardiovascular system" when referring to a closed system, but (except for substantially old citations that call the lymphatic system closed) citations (like this one) define the human circulatory system as closed and the lymphatic system as open (like this one). So I think it can be confusing to onlookers to say that the lymphatic system is part of the circulatory system. The approach taken by some citations is to describe the lymphatic and circulatory systems as closely linked but functioning differently, or the lymphatic system as separate from cardiovascular system. One example is here:. There's also another way of describing the systems, and this description says that vessels of the lymphatic system "do not form a full circulating system."

On the other hand, "Alters and Schiff Essential Concepts for Healthy Living" (2019) says, "You may have heard the cardiovascular system also referred to as the circulatory system. These terms are often used interchangeably. The term cardiovascular refers to the heart (cardio-) and blood vessels (vascular). The term circulatory refers to the circulation of the blood. In practical use, both terms describe a body system that pumps blood enclosed in blood vessels to all parts of the body." "Burton's Microbiology for the Health Sciences, Enhanced Edition" (2020) says, "The circulatory system consists of the cardiovascular and lymphatic systems." And "The New Era of the Lymphatic System: No Longer Secondary to the Blood Vascular System" (2012) (a review) says the blood and lymphatic systems are the two major circulatory systems in the body, while saying the lymphatic system has received much less scientific and medical attention and reviewing the controversy surrounding it. GBFEE (talk) 20:40, 28 January 2022 (UTC)
 * Hello GBFEE, thanks for your thoughts. I've found some clearer presentations of the subject in two reputable textbooks and hope to make more edits soon. Best --Iztwoz (talk) 08:14, 29 January 2022 (UTC)
 * Hi, Iztwoz. Sorry about getting your gender wrong.
 * I visited Talk:Lymphatic system for the first time earlier, and I saw that what I said about the descriptions possibly confusing people has already happened. See Scatterkeir's comment. I don't know if moving "also called the cardiovascular system or the vascular system" out of the lead paragraph improves the page, but I know you helped by removing "includes the lymphatic system." I was going to bring up the lymphatic system thing eventually. Your edits gave me a push to do it yesterday. I might source some more things in the page, but I'll leave the presentations to you. Thank you. GBFEE (talk) 20:27, 29 January 2022 (UTC)
 * Thanks GBFEE, the aka's are not aka's according to the refs used (and others) and think it is clearer now with the refs separating out the two terms. The first para reflects the meaning of the page name by referring to the blood which is not a component of the cardiovascular system.? --Iztwoz (talk) 20:53, 29 January 2022 (UTC)
 * The terminology depends on what the resources say, and they aren't faithfully consistent on this. The resource you used to make this edit says "The blood circulatory system (cardiovascular system)." Alters and Schiff that I cited above says, "You may have heard the cardiovascular system also referred to as the circulatory system. These terms are often used interchangeably." There are different ways to present this information, which is why I put down different statements and presentations by resources. I don't know what's the best way to define the topic when one resource presents the circulatory system and lymphatic system as separate but closely linked and another, like "Burton's Microbiology for the Health Sciences", says that "the circulatory system consists of the cardiovascular and lymphatic systems." I've read a lot of descriptions of the circulatory system, and they can sometimes appear contradictory. That's why we have to be careful not to confuse people when delivering information on the topic. So I'm grateful for your efforts to clear up things. GBFEE (talk) 21:20, 29 January 2022 (UTC)

Needs work
Changed from B to C, a fair bit of work is needed on whole page particularly Development section - which is also very short of citations.--Iztwoz (talk) 17:39, 2 February 2022 (UTC)

Semi-protected edit request on 27 May 2022
I would like to add on a diagram about the blood flow of oxygenation through the heart and into the pulmonary and circulatory systems. below is the diagram. 547130cuhsd (talk) 20:48, 27 May 2022 (UTC)
 * Red information icon with gradient background.svg Not done: This page is currently semi-protected so that only autoconfirmed users can edit it. You will automatically be autoconfirmed once you meet the criteria. You would also need consensus to add an image to the article (atleast for an edit request; once you can edit the page yourself you can be bold and do so and if it's challenged by any editor consensus is then required). — Sirdog (talk) 22:10, 27 May 2022 (UTC)

Reversion of my contributions.
A user named "Kashmiri" reverted my edits about:
 * Etymology of the term "cardiovascular"
 * Blood being a "fluid connective tissue" that is explicitly mentioned in the Connective tissue article in the Types section.

Please, I urge you not to withdraw the valuable contributions from editors if you have no knowledge of any specific academic discipline. This type of behavior can cause nuisance as one may be deprived of knowledge. So, I think I might be able to reach consensus. Nishānt Omm (talk) 04:16, 25 June 2022 (UTC)


 * @Nishānt Omm:
 * In the lead of Connective tissue:.
 * By refactoring the definition, you went against the consensus in the section above.
 * Can you clarify what discipline I have no knowledge of in your view? Also read WP:PA.
 * Read WP:BRD. — kashmīrī  TALK  17:18, 25 June 2022 (UTC)
 * FWIW I've indefblocked the original poster of this thread for a long-term pattern of behaviour just like that seen above. Graham 87 08:42, 3 July 2022 (UTC)