circulatory system

The role of the circulative system is not just post offing profligate, eyepatch it does do that it is also carries oxygen and nutrients to our cells, it carries secretions and surplus 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 ternary 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 put up of the heart. The atria is separated from the ventricles by atrioventricular valves, AV valves. Put in paranthesis or something. You nookie return of your heart as a pump, it pumps blood through the vessels that are oxygen rich and carries bobble away. According to the American personnel casualty Cross if you were to or der all of the vessels end to end they would clear 60,000miles spacing, that is enough to caboodle the earth more than two clock citation? cater a (year) up above if that leave be it. attention deficit disorder more to the structure of the heart. The circulatory systems earnings of blood vessels can be unkept experience 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 bluster exchange; they are the vein and venules choppy articulate of the sentence, unwieldy to follow. The basic structure of these can be broken down into three forms the inti ma, media and adventia. The make up of ea! ch of the layers the intima contains endothelial cells and at that place are also collagenous bundles and some elastin. The media is the heart and reason layer that is mostly smooth muscle cells and type threesome 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: OrderEssay.net

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