User:AICOI/sandbox

Week 13: Continue Editing
The rabbit's nasal cavity lies dorsal to the oral cavity, and the two compartments are separated by the hard and soft palate. The nasal cavity itself is separated into a left and right side by a cartilage barrier, and it is covered in fine hairs that trap dust before it can enter the respiratory tract. As the rabbit breathes, air flows in through the nostrils along the alar folds. From there, the air moves into the nasal cavity, also known as the nasopharynx, down through the trachea, through the larynx, and into the lungs. The larynx functions as the rabbit's voice box, which enables it to produce a wide variety of sounds. The trachea is a long tube embedded with cartilaginous rings that prevent the tube from collapsing as air moves in and out of the lungs (Fig. 5). The trachea then splits into a left and right bronchus, which meet the lungs at a structure called the hilum. From there, the bronchi split into progressively more narrow and numerous branches. The bronchi branch into bronchioles, into respiratory bronchioles, and ultimately terminate at the alveolar ducts. The branching that is typically found in rabbit lungs is a clear example of monopodial branching, in which smaller branches divide out laterally from a larger central branch (Fig. 3).

Rabbits breathe primarily through their noses due to the fact that the epiglottis is fixed to the backmost portion of the soft palate. Within the oral cavity, a layer of tissue sits over the opening of the glottis, which blocks airflow from the oral cavity to the trachea. The epiglottis functions to prevent the rabbit from aspirating on its food. Further, the presence of a soft and hard palate allow the rabbit to breathe through its nose while it feeds.

Rabbits lungs are divided into four lobes: the cranial, middle, caudal, and accessory lobes. The right lung is made up of all four lobes, while the left lung only has two: the cranial and caudal lobes. In order to provide space for the heart, the left cranial lobe of the lungs is significantly smaller than that of the right. The diaphragm is a muscular structure that lies caudal to the lungs and contracts to facilitate respiration.

*** change font of media

Kaitlyn:

Rabbit Reproduction

The adult male reproductive system forms the same as most mammals with the seminiferous tubular compartment containing the Sertoli cells and an adluminal compartment that contains the Leydig cells. The Leydig cells produce testosterone, which maintains libido and creates secondary sex characteristics such as the genital tubercle and penis. The Sertoli cells triggers the production of Anti-Mullerian duct hormone, which absorbs the mullein duct. In an adult male rabbit, the sheath of the penis is cylinder-like and can be extruded as early as 2 months of age. The scrotal sacs lay lateral to the penis and contain epididymal fat pads which protect the testes (Fig 1). Between 10-14 weeks, the testes descend and are able to retract into the pelvic cavity in order to thermoregulate. Furthermore, the secondary sex characteristics, such as the testes, are complex and secrete many compounds. These compounds includes fructose, citric acid, minerals, and a uniquely high amount of catalase The adult female reproductive tract is bipartite, which prevents an embryo from translocating between uteri. The two uterine horns communicate to two cervixes and forms one vaginal canal (Fig. 2). Along with being bipartite, the female rabbit does not go through an estrus cycle, which causes mating induced ovulation.

Aivi:

 * Photograph of monopodial branching as seen in rabbit lungs (Fig. 3)
 * Labeled diagram of dissected rabbit lungs with trachea intact (Fig. 5)
 * I also intend to skin the head and saw it in half in order to label the structures surrounding the nasal/oral cavities.

Kaitlyn:

 * Female rabbit reproductive system, labeled (Fig. 2)
 * Drawing of male rabbit reproductive system, labeled (Fig. 1)

Alyssa:

 * Dissection of the male genitalia taken from lab. (Fig. 4)
 * This week I will work on taking a more clear image to post before we go live as well as continue with dissecting to show more of the reproductive pathway. Male Rabbit Reproductive System.jpg

Group Draft:
Kaitlyn: Rabbit Reproduction ***Male diagram will be added once further into dissection*** ***Add this section to Lagomorpha page too***

The adult male reproductive system forms the same as most mammals with the seminiferous tubular compartment containing the Sertoli cells and an adluminal compartment that contains the Leydig cells. The Leydig cells produce testosterone, which maintains libido and creates secondary sex characteristics such as the genital tubercle and penis. The Sertoli cells triggers the production of Anti-Mullerian duct hormone, which absorbs the mullein duct. In an adult male rabbit, the sheath of the penis is cylinder-like and can be extruded as early as 2 months of age. The scrotal sacs lay lateral to the penis and contain epididymal fat pads which protect the testes (Fig 2). Between 10-14 weeks, the testes descend and are able to retract into the pelvic cavity in order to thermoregulate. Furthermore, the secondary sex characteristics, such as the testes, are complex and secrete many compounds. These compounds includes fructose, citric acid, minerals, and a uniquely high amount of catalase.

The adult female reproductive tract is bipartite, which prevents an embryo from translocating between uteri. The two uterine horns communicate to two cervixes and forms one vaginal canal (Fig. 1). Along with being bipartite, the female rabbit does not go through an estrus cycle, which causes mating induced ovulation.

Rabbit Reproduction:
Additions: The average female rabbit becomes sexually mature at 3 to 8 months of age and can conceive at any time of the year for the duration of her life. However, egg and sperm production can begin to decline after three years. During mating, the male rabbit will mount the female rabbit from behind and insert his penis into the female and makes rapid pelvic hip thrusts. The encounter lasts only 20-40 seconds and after, the male will throw himself backwards off of the female doe.

The rabbit gestation period is short and ranges from 28 to 36 days with an average period of 31 days. A longer gestation period will generally yield a smaller litter while shorter gestation periods will give birth to a larger litter. The size of a single litter can range from four to 12 bunnies allowing a female to deliver up to 60 new kits a year. After birth, the female can become pregnant again as early as the next day.

The mortality rates of embryos are high in rabbits and can be due to infection, trauma, poor nutrition and environmental stress so a high fertility rate is necessary to counter this.

Personal Draft:
Rabbit Respiratory: **Image of labeled cross section of head will be added after further dissection--depending on clarity of live specimen, a simple line drawing could be made based on the original image (could not find anatomical diagrams on creativecommons)**

The rabbit's nasal cavity lies above the oral cavity, and the two compartments are separated by the hard and soft palate. The nasal cavity itself is separated into a left and right side by a cartilage barrier. As the rabbit breathes, air flows in through the nostrils along the alar folds. From there, the air moves into the nasal cavity, down through the trachea and into the lungs. The trachea is a long tube embedded with cartilaginous rings that prevent the tube from collapsing as air moves in and out of the lungs (Fig. 5). The trachea then splits into a left and right bronchus, which meet the lungs at a structure called the hilum. From there, the bronchi split into progressively more narrow and numerous branches. The bronchi branch into bronchioles, into respiratory bronchioles, and ultimately terminate at the alveolar ducts. The branching that is typically found in rabbit lungs is a clear example of monopodial branching, in which smaller branches divide out laterally from a larger central branch (Fig. 3).

Rabbits breathe primarily through their noses due to the fact that the epiglottis is fixed to the backmost portion of the soft palate. Within the oral cavity, a layer of tissue sits over the opening of the glottis, which blocks airflow from the oral cavity to the trachea. Rabbits do not possess septa within their lungs. Instead, the lungs are divided into lobes. The lungs can be broken down into four sections: the cranial, middle, caudal, and accessory lobes. In order to provide space for the heart, the left cranial lobe of the lungs is significantly smaller than that of the right. For this reason, the right lung has four lobes, while the left lung only has two: the cranial and caudal lobes. The diaphragm is a muscular structure that lies dorsal to the lungs and contracts to facilitate respiration.

**underlined sections were additions to the draft

(currently no reproduction/respiratory section listed on the Rabbit wikipedia page--these would become entirely new sections under "Biology")

Kaitlyn:

 * "I found that the draft was extremely informative. However, it may be useful to add an image that illustrates the structure of the male reproductive system, as well as the respiratory system if possible. It was a little confusing to see one sex's reproductive system but not the other. Additionally, it may be helpful to link pages that are related to your topic as it might be helpful for readers if they do not have good background knowledge in biology or anatomy." Niemolej(talk) 00:38, 23 March 2019 (UTC)
 * Plans have already been put into place to draw up a simple diagram of the male reproductive system similar to the female reproductive system already posted. This will be done when the rabbit is further dissected. I also plan to link more pages that could help the reader with comprehension
 * "You may also want to edit the first sentence as Leydig cells were referred to twice" "Stealth should also be changed to sheath in the sentence below, but overall this sentence is essentially quoted from the source and should be rephrased"
 * Revised sentences: The adult male reproductive system forms the same as most mammals with the seminiferous tubular compartment containing the Sertoli cells and an adluminal compartment that contains the Leydig cells. In an adult male rabbit, the sheath of the penis is cylinder-like and can be extruded as early as 2 months of age.
 * "Very well organized page! Your gameplan was very clear and the sources were well formatted. I was not able to tell who was giving what contributions on the group part, so that might be something to try and clear up."
 * Make contributions clear: Reproduction (Individual organs) = Alyssa, Reproduction (as a system and diagram) = Kaitlyn, Respiration = Aivi
 * "This section is pretty long, so I would recommend searching for more sources. I would suggest that you have 4-5 sources in total. I'd also keep an eye out for possible connections to other pages throughout your draft."
 * Possibly find more sources, more on individual organs of reproductive system?
 * "Are you also planning on adding this to the Lagomorpha page?"
 * Game plan with other group members on what other pages we should add our contributions to.

Alyssa:

==== "Overall the Week 6 draft is well organized. I could not tell though if you plan to add other sections such as listed in Week 5 or wanted to focus more on just reproduction and respiration. Additionally it was unclear if everyone contributed to the reproduction section and then just one member to the respiratory section and how work was being split up so it was difficult to tell if work was being split up evenly." ====


 * Decided to focus reproduction and respiration
 * Divided work up between members and distinguished who is doing what
 * Reproduction- Kaitlyn & Alyssa
 * Respiratory System- Aivi

==== "I can see a need for these subsections in the biology section of the rabbit page. Looking at your game plan, I think you guys might have too much to add if you plan on contributing all of the suggested sections, but I do think both of these prepared sections are a good start." ====


 * Talk with group members and decided to add sections about the rabbit reproduction system and respiratory system.
 * Take images detailing male reproductive organs
 * Also discussed drawing a simple diagram of rabbit reproduction anatomy to post

"Additionally, it may be helpful to link pages that are related to your topic as it might be helpful for readers if they do not have good background knowledge in biology or anatomy"

 * discuss with group members which Wikipedia pages would be useful to link

"This section is pretty long, so I would recommend searching for more sources. I would suggest that you have 4-5 sources in total."

 * Continue to look for more sources to add
 * Search for useful sources on PLU Library database
 * Additional sources on male rabbit reproduction:
 * Reproductive Sytem of Male Rabbit

Personal Draft:
FEEDBACK:

"it may be useful to add an image that illustrates the structure of the male reproductive system, as well as the respiratory system if possible" ---Niemolej


 * Add a sagittal section of the our dissected rabbit specimen
 * Add a ventral view of the larynx, pharynx, and epiglottis
 * Potentially come up with a simple cartoon figure to supplement photograph and written descriptions
 * Key structures will be labeled

"Additionally it was unclear if everyone contributed to the reproduction section and then just one member to the respiratory section and how work was being split up so it was difficult to tell if work was being split up evenly" ---Kurtames


 * Added differentiation between group and individual additions
 * Added clear markers for individual work by each group member

"The personal draft section seemed very well written, but might be too "textbook material" than a Wikipedia page. This isn't a bad thing, but it may be difficult for others that aren't use to the terminology like dorsal, cranial, or caudal." ---AR12Fan


 * REVISED VERSION: The rabbit's nasal cavity lies above the oral cavity, and the two compartments are separated by the hard and soft palate. The nasal cavity itself is separated into a left and right side by a cartilage barrier. As the rabbit breathes, air flows in through the nostrils along the alar folds. From there, the air moves into the nasal cavity, down through the trachea and into the lungs. Rabbits breathe primarily through their noses due to the fact that the epiglottis is fixed to the backmost portion of the soft palate. Within the oral cavity, a layer of tissue sits over the opening of the glottis, which blocks airflow from the oral cavity to the trachea. Rabbits do not possess septa within their lungs. Instead, the lungs are divided into lobes. The left and right lungs can be broken down into three sections: the cranial, middle, and caudal lobes. In order to provide space for the heart, the left cranial lobe of the lungs is significantly smaller than that of the right. For this reason, the right lung has four lobes, while the left lung has two. The diaphragm is a muscular structure that lies behind the lungs and contracts to facilitate respiration.



"The personal draft regarding the rabbit respiratory system is also well done. However, I think more sources are necessary."---Lunord22


 * Added additional sources on the rabbit respiratory system:
 * Approach to Rabbit Respiratory Disease
 * The Rabbit as a Model for Studying Lung Disease and Stem Cell Therapy
 * Comparative Anatomical Study of Lungs in Domestic Rabbits (Oryctolagus cuniculus) and Guinea Pigs (Cavia porcellus)
 * MORPHOLOGICAL STUDY OF RABBIT LUNG, BRONCHIAL TREE AND PULMONARY VESSELS USING CORROSION CAST TECHNIQUE
 * Respiratory System of Rabbit



Future Directions:

 * Aivi: skin and saw the head of the rabbit, take pictures and label, take a cross section of the individual lungs, expand on internal structures of the lung
 * Kaitlyn: take pictures of larger structures and label? Come up with a simple line diagram of male reproductive organs
 * Alyssa: dissect individual sexual organs and, photograph, and label?

Rattlesnake: Lunord22

 * Neutral Content
 * The drafts are written in a neutral tone.
 * Reliable Sources
 * Your sources look reliable, and the majority of them are primary sources, which is good! You also have many sources for each section, which make your drafts more reliable.
 * You have the same sources listed multiple times in your works cited. You can actually just cite it once, and then re-use your original citation. This will make your bibliography shorter and less repetitive/jumbled.
 * I would suggest adding a header for your bibliography section so that it looks more organized and is separated from the rest of your draft.
 * Clear Structure:
 * The page clearly outlines the work of each group member, and the distribution of work seems equally divided. I would suggest adding divisions within your sections to distinguish between future plans and ideas, and your actual draft that you will eventually put onto the Snake page.
 * Week 5 clearly identifies the Snake page as the main article of interest with appropriate links. Luke, Mena, and Alex plan to edit sections concerning vertebrae, heat-sensing pits, and the three-chambered heart respectively.
 * I would suggest adding an overview photo of your iguana with the vertebral column dissected (with the four regions labeled) in addition to the pictures of the individual vertebrae.
 * You might also consider linking some the more sophisticated/scientific words in your vertebrae and heat sensing pit sections, so that people who are not necessarily well versed in anatomy can understand (ex. trigeminal nerve).
 * Copy-Edits/Comments:
 * Original: "The snake's heart is divided into the atrium (heart) via two atria's and one ventricle (heart) that is divided into three different chambers, which include the systemic and left-sided cavum arteriosum, the pulmonary and right‐sided cavum pulmonale, and the medial cavum venosum. These components allow the heart to provide oxygen and other nutrients throughout the body."
 * Comments:
 * More than one atrium: atria
 * I think you should be more specific about how the components allow the heart provides oxygen and other nutrients to the body. You could talk about the flow of blood through the heart and around the body. This would also go hand in hand well with a labeled cross section of the snake heart. I think this would better clarify your section because right now its sounds a bit like a list of chambers, rather than a description of the form and function of the snake heart.

Iguana: ArmyStud77

 * Neutral Content
 * The drafts are written in a neutral tone.
 * Reliable Sources
 * The "Anatomy Reorganization" section could more citations, especially in the Anatomy and Physiology, eyes, eardrums, and reproduction sections
 * Overall, your sources look reliable since many of them are primary sources.
 * Clear Structure:
 * I think your "Anatomy Reorganization" section could be re-organized into order to make it easier to distinguish which sections you are editing, and what portions are from the original article and which are edited. I would really suggest using more bolding, indentation, bullet points, and the various different heading options that Wikipedia offers to make it look a little cleaner.
 * The division between group and personal drafting is clear, but I would suggest adding a divider or adding some kind of signifier to show who is editing what to ensure the work is divided equally.
 * You might also consider adding a diagram of the male and female reproductive systems to supplement your descriptions.
 * Copy-Edits/Comments:
 * Original: Male iguanas, like other male examples of Squamata, have two hemipenes. During copulation one hemipene will be inserted into the female's cloacal vent. Females can store sperm from previous mates for several years to continue to fertilize her eggs incase she finds no male in her area when she is ready to lay again.
 * Edited: Male iguanas, like other male examples of Squamata, have two hemipenes. During copulation one hemipene is inserted into the female's cloacal vent. Females can store sperm from previous mates for several years to continue to fertilize her eggs in the event that she cannot find a male mate when she is ready to lay again.

Group Draft
Rabbit Reproduction The adult male reproductive system forms the same as most mammals with the seminiferous tubular compartment containing the Leydig cells, as well as an adluminal compartment that also contains Leydig cells. The Leydig cells produce testosterone, which maintains libido and creates secondary sex characteristics such as the genital tubercle and penis. The Sertoli cells triggers the production of Anti-Mullerian duct hormone, which absorbs the mullein duct. In an adult male rabbit, the stealth of the penis is cylinder-like and can be extruded as early as 2 months of age. The scrotal sacs lay lateral to the penis and contain epididymal fat pads which protect the testes. Between 10-14 weeks, the testes descend and are able to retract into the pelvic cavity in order to thermoregulate. Furthermore, the secondary sex characteristics, such as the testes, are complex and secrete many compounds. These compounds includes fructose, citric acid, minerals, and a uniquely high amount of catalase.

The adult female reproductive tract is bipartite, which prevents an embryo from translocating between uteri. The two uterine horns communicate to two cervixes and forms one vaginal canal (Fig. 1). Along with being bipartite, the female rabbit does not go through an estrus cycle, which causes mating induced ovulation.

The rabbit gestation period is short and ranges from 28 to 36 days with an average period of 31 days. A longer gestation period will generally yield a smaller litter while shorter gestation periods will give birth to a larger litter. The size of a single litter can range from 4 to 12 bunnies, which allows a female to deliver up to 60 new kits in a year. The mortality rates of embryos are high in rabbits and can be due to infection, trauma, poor nutrition and environmental stress, so a high fertility rate is necessary in order to produce living offspring.

Personal Draft
Rabbit Respiratory

The rabbit's nasal cavity lies dorsal to the oral cavity, and the two compartments are separated by the hard and soft palate, with the soft palate lying rostral to the hard palate. Within the nasal cavity, a cartilaginous septum separates the cavity into a left and right side. The vomeronasal organ and the olfactory sensory epithelium are essential to the function of the rabbit's olfactory system, providing for the rabbit's keen sense of smell and sensitivity.

As the rabbit breathes, air flows in through the nostrils along the alar folds. From there, the air moves into the nasal cavity, down through the trachea and into the lungs. Rabbits breathe primarily through their noses due to the fact that the epiglottis lies rostral to the soft palate. Moreover, within the oral cavity, a layer of tissue sits over the opening of the glottis, essentially blocking airflow from the oral cavity to the trachea.

The left and right lungs can be broken down into three sections: the cranial, middle, and caudal lobes. However, rabbits do not possess septa, meaning the lobules are not completely divided. In order to provide space for the heart, the left cranial lobe of the lungs is significantly smaller than that of the right. The diaphragm lies caudal to the lungs and is responsible for the muscle contractions that facilitate respiration.

Game Plan:

 * Topic/Article: Biology Section of Rabbit Article (potential routes)
 * add to digestion section
 * create reproductive section
 * create cardiovascular section
 * create renal section
 * create a section dedicated to the rabbit as a model for humans in research
 * Images or Other Media:
 * photograph ventral view of the dissected rabbit with reproductive organs labeled
 * cross section of the heart with chambers labeled--> introduce structure and the flow of the heart

Sources:

 * Digestion:
 * Nutrition of the Rabbit
 * Reproduction:
 * The Rabbit as a model for reproductive and developmental toxicity studies
 * Rabbit Reproduction Basics
 * Respiratory:
 * Rabbit Respiratory System
 * Images/Diagrams:
 * A Colour Atlas of Anatomy of Small Laboratory Animals

Schutz Comments:

 * I suspect that you have already done this, but make sure that the Lagomorpha and Leporidae pages do not already cove these topics.
 * Nice resources. I like that they are all primary
 * Make sure that you ow start separating out contributions with regard to responsibilities for each member and what you will do as a group.
 * See the long list of sources on the Week 11 Timeline information for places and ideas of how you can obtain / create images

Preferred Organisms

 * 1) Rabbit: I am interested in dissecting the rabbit as I am hoping to pursue a career in medicine, and the rabbit has been a widely used model organism in biomedical research ranging from the immune system to the cardiovascular system in the hopes of better understanding the human body and how it interacts with various treatments and potentially even applying these findings in a clinical setting.
 * 2) Rat: Similar to the rabbit, I am very interested in how the rat can be used as a model for humans not only to understand genetics but also disease progression and treatment, which can be applied to human physiology; furthermore, in genetics and animal behavior, I had the opportunity to learn about how genes can impact both morphology and behavior in mice/rats, and I would love to be able to explore this model organism further through dissection.
 * 3) Chicken: In developmental biology and mammalian physiology, I briefly learned about the mechanisms behind the development of a chick inside a shelled egg; consequently, I would love to be able to extend my learning beyond the embryonic development of chickens to the adult organism through dissection, and potentially compare those structures to chicks earlier in development.

Potential Wikipedia Articles

 * 1) Brush Rabbit: This article lacks the necessary citations throughout: habitat, reproduction, behavior, etc. I would suggest going back to the three references and add the citations where appropriate. Additionally, food, predators and survival techniques, and human interaction and impact are all underrepresented topics, so I would suggest expanding on these ideas further.
 * 2) Rat: This article touches on rat anatomy, specifically the anatomy of the tail and heart. I would suggest making a separate anatomy section with labeled diagrams just before the rat tail and research section. In this way, readers would be able to learn about the anatomy itself and how it functions, before learning how these structures resemble/act as a model for humans in research settings.
 * 3) Chicken: This article contains a figure of the chicken anatomy, but does not go into detail describing the anatomy in writing. I would suggest adding a section devoted to the anatomy alone, and creating subgroups for the various different organ systems to keep the article organized. The embryology section is also underrepresented in comparison to other sections, I would suggest expanding on this concept further.

Copy Edits:

 * Draft of improved Language and Grammar from Shark Anatomy Article:
 * ORIGINAL: Shark anatomy has points of difference with the fish anatomy of bony and other types of fish. The large number of species and the diversity of shark habitats means that there are also variations on the "typical" shark' s bodies.
 * EDITED: Shark anatomy differs from that of bony fish in a variety of ways. Variation observed within shark anatomy is a potential result of speciation and habitat variation. [citation?]
 * ORIGINAL: Like higher up vertebrates, sharks have a four chambered heart. Unlike other vertebrates, sharks have a single-circuit circulatory system, blood flows from the heart, to the gills where it is oxygenated, throughout the body where it is deoxygenated and then back to the heart to repeat. The flow of the heart in order is: sinus venosus, atrium, ventricle and conus arteriosus.
 * EDITED: Sharks possess a single-circuit circulatory system centered around a four chambered heart. Blood flows from the heart to the gills where it is oxygenated. This oxygen-rich blood is then carried throughout the body and to the tissues before returning to the heart. As the heart beats, deoxygenated blood enters the sinus venosus. The blood then flows through the atrium to the ventricle before emptying into the conus arteriosus and leaving the heart.
 * ORIGINAL: Unlike bony fish, the sharks have a complex dermal corset made of flexible collagenous fibers and arranged as a helical network surrounding their body. This works as an outer skeleton, providing attachment for their swimming muscles and thus saving energy. A similar arrangement of collagen fibers has been discovered in dolphins and squid. Their dermal teeth give them hydrodynamic advantages as they reduce turbulence while swimming.
 * EDITED: Unlike bony fish, sharks have a complex dermal corset made of flexible collagenous fibers arranged as a helical network surrounding their body. This outer skeleton functions as a site for muscle attachment, which allows sharks to be more energy efficient as they swim. A similar arrangement of collagen fibers has been discovered in dolphins and squid. Furthermore, sharks possess dermal teeth that reduce turbulence while swimming, which allows them to be more hydrodynamic. [FIND CITATION]

Article Evaluation

 * Talk page rating (good, featured, start, or stub)
 * Rated as start class
 * WikiProjects: Sharks, Fishes, and Animal Anatomy
 * Little activity on talk page/edit history
 * Potential licensing issue with an included image
 * Clarity and organization of page
 * Lead section is fairly short and could be more detailed--what does "typical" shark body refer to
 * Skeleton, integument, and circulatory system sections are underrepresented--should consider expanding
 * Potentially add an image of a labeled shark skeleton
 * Use of "mainly cartilage" is ambiguous
 * Author over-represents details on the anatomy of the shark tail--potentially expand on other fins
 * The author's use of "most sharks" is ambiguous
 * Anatomy concerning the reproductive, gastrointestinal, and muscular system should be added
 * Reference/citations section (peer-reviewed and independent)
 * Potential Sources of Plagiarism:
 * Citations needed in the skeleton section
 * Citation needed for the introductory paragraph under the "fins" section
 * Citation needed for integument section
 * Links included in the reference section are functional
 * "How Stuff Works" seems like a questionable source (not peer-reviewed, blog-type source)
 * Sources of bias
 * "Higher up vertebrates" implies that other vertebrates are more advanced/better than sharks