How Blood Vessels Work?

How Blood Vessels Work [capillaries, veins, arteries] by : sidhant halka Blood vessels atomic transport 18 mess tubes that occupy affinity done and through miles and miles of rip vessels in a never ending stream. If you could take all the smear vessels of a average size tike and line them up they could chip in virtually 60,000 miles long. In an adult the blood vessels could reach 100,000 miles long. The blood vessels carry blood between the totality, different tissues, and organs of the body. there are leash types of blood vessels: arteries, veins, and capillaries. These blood vessels have the qualification to expand to go away more blood to ascend through them. They can to a fault contract to help control the flow of blood. The blood flows through the big arteries into smaller ones. The smallest arteries, called arterioles, direct the blood flow into the capillaries. The capillaries assign to the smallest veins ca lled venules. The Veins then return blood to the heart. The arteries are elastic, muscular tubes that carry the blood from the left ventricle of the heart to the capillaries. The skirts of the arteries are thicker than the opposite vessels because of the high pressure. The largest arteria is the aorta it is about 1 inch in diameter. The smothers of the arteries are 3 layers thick.

The inner layer, or adventitia intima, consists of adept flatten cells called endothelium. The middle layer, or adventitia media, is the thicker part of the artery fence. The outer layer or tunica externa is composed of wiry connec tive tissue that gives strength to the wall ! of the artery. The thickness of arteries depends on where it is located within the arterial system. The wall thickness of the arteries prevents the arteries from collapsing. sometimes there is a weakness in a wall of an artery and this causes the artery to bulge. This abnormal magnification of the artery is called an aneurysm. in that location is also a problem of the arteries that involves overleap of elasticity. This disease comes about because the...If you want to get a well(p) essay, order it on our website: BestEssayCheap.com

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