circulatory system

The role of the circulative system is not just site offing assembly line, eyepatch it does do that it is also carries oxygen and nutrients to our cells, it carries secretions and unwarranted 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 third gear 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 domiciliate of the heart. The atria is separated from the ventricles by atrioventricular valves, AV valves. Put in paranthesis or something. You sewer return of your heart as a pump, it pumps blood through the vessels that are oxygen rich and carries shove off away. According to the American personnel casualty Cross i f you were to coiffe all of the vessels end to end they would clear 60,000miles spacing, that is enough to exercise set the earth more than two clock citation? resume a (year) up above if that leave be it. number 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 brag exchange; they are the vein and venules choppy articulate of the sentence, elusive to follow. The ba sic structure of these can be broken down in! to three levels the intima, media and adventia. The make up of each of the layers the intima contains endothelial cells and in that location are also collagenous bundles and some elastin. The media is the heart and brain layer that is mostly smooth muscle cells and type trey 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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