User talk:Kubibeck

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SAMPLE OF SCIENCE HOME ? A PIECE OF NOTERIETY? A REPLY FROM SOCIETY=

(medical science a b-tec = 3 a levels)

Bold text Unhealthy cardiac muscle and the effects In contrast to a healthy cardiac muscle, an unhealthy cardiac muscle can cause sudden death. The electrical system to the heart becomes irregular and the ventricles may flutter or quiver (ventricular fibrillation), the blood is therefore not delivered around the body. The greatest risk is in the minutes following an episode. The blood flow to the brain will be reduced dramatically, the person would lose conciseness and death follows unless the correct treatments have been admitted.

Bold text Healthy cardiac muscle and its functions Cardiac muscle is a type of involuntary mononucleated, or uninucleated, striated muscle found exclusively within the heart. Its function is to pump blood through the circulatory system by contracting

Role of calcium: In contrast to skeletal muscle, cardiac muscle cannot contract in the absence of extra cellular calcium ions.

Bold text Smooth muscle is found in the hollow internal organs such as blood vessels, the bladder and uterus and others. The smooth muscle is involuntary and is not controlled by the human brain. The smooth muscle is not striated (smooth) and it is spindle shaped and only has one central nucleus.

Bold text Transitional epithelium is a type of epithelium found lining the organs which can stretch. Because they can slide over each other the appearance of the cells vary due to the organ distending or contracting. If the organ is contracting it gives the appearance of several layers of cells, but when distended the cells take on the appearance of looking like there are few layers.

Bold text Squamous cells are irregularly flat in shape, one layer of a simple squamous cell forms the alveoli of the respiratory membrane, and the endothelium of capillaries. The cells are the minimum barrier to diffuse. The squamous cell is situated in many places.

Bold text These are just a few numbers of sentences that I have written. This part is mainly focusing on muscles epithelium and squamous cells. Much obliged for any comments.