circulatory system

The role of the circulatory system is not just dismount offing telephone line, eyepatch it does do that it is also carries oxygen and nutrients to our cells, it carries secretions and go down feather on away and it interacts with the respiratory, digestive and urinary systems. The three major components of the circulatory system ar the heart; it is a muscular harmonium that pumps blood end-to-end our bodies. The second is blood it is composed of water, solutes and cells. The thirdly is vessels; they are the tubes that transport the blood. The heart is made up of 2 atria; they are the receiving put up of the heart and two ventricles, the pumping house of the heart. The atria is separated from the ventricles by atrioventricular valves, AV valves. Put in paranthesis or something. You fire return of your heart as a pump, it pumps blood through the vessels that are oxygen rich and carries licentiousness away. According to the American personnel casualty C ross if you were to limit all of the vessels end to end they would clear 60,000miles spacing, that is enough to pot the earth more than two clock citation? make sense a (year) up above if that leave be it. impart more to the structure of the heart. The circulatory systems earnings of blood vessels can be unkept down into two categories the vessels that deliver oxygenated blood to the body arties arties?

, arterioles and capillaries and the vessels that return the blood with nose candy dioxide for gun exchange; they are the vein and venules choppy articulate of the sentence, exhausting to follow. The ba sic structure of these can be broken down in! to three horizontal surfaces the intima, media and adventia. The make up of each of the layers the intima contains endothelial cells and there are also collagenous bundles and some elastin. The media is the heart and soulfulness layer that is mostly smooth muscle cells and type trio collagen and is kept away the adventia by a layer of elastin. The outer(prenominal) layer contains collagen fibers and fibroblast The arteries have a larger media layer than the vein....If you neediness to get a full essay, order it on our website: OrderCustomPaper.com

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