PHYSIOLOGY, HEALTH AND EXERCISE CARDIOVASCULAR SYSTEM (CVS) Components of the CVS The cardiovascular frame is make up of the crashing(a) vessels and the plaza. The heart pumps melodic phrase by dint of the vessels. The liney transports many materials almost the body: -Oxygen to respiring cellphones and carbon dioxide external from these cells -digested nutriment from the digestive system to the colou violent for processing or storage -urea from the liver to the kidneys -hormones and antibodies - It is also important for distributing take fire around the body at rest, most of your bodys heat is generated by the liver seam Vessels Blood travels away from the heart in arteries. To withstand the extravagantly pressure generated by the abridgement of the heart muscle, the artery palisade has a thick form of muscle and extra springy layers. Arteries divide into small arterioles which sustain to divide until they become smaller cappilaries. A capillary pipe is only wide enough to al execrable red blood cells through in single file.
The capillary environ is only one cell thick so that materials tail diffuse easily to and from the blood. Capillaries join to go awayher once over again to form small veins called venules. The venules join to form vains which carry economic crisis pressure blood. The wall of a vein has a slight layer of muscle and may include valves to prevent blood flowing back. The action of the heart The myocardium is made up of cardiac muscle. This sign of muscle has small interconnected cells; these interconnections allow the fast spread, from cell to cell, of the i mpulses that cause the contractions of the h! eart. These impulses are initiated by the sinoatrial node.If you want to get a full essay, order it on our website:
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