Discuss various parts of circulatory system in human beings
Answers
heart , arteries ,veins and capillaries.
Explanation:
Heart - heart is made up of cardiac muscles heart is a hollow cone shaped muscular organ it is a short of pump the pumping action of the heart is fundamental to educate nutritions of cells and maintenance of internal environment without the pumping action of the heart cells would starve waste products such as carbon dioxide, lactic acid and acid phosphate word build up and life of the cells and of the individuals would cease.
Arteries - arteries contains blood under very high pressure and area for elastic muscular and thick walled . The structure and relative thickness vary with the size of arteries and the great extensibility of the arteries enables them to receive additional amount of blood forced into them to reach contraction of the heart if the artilleries were rigid the systolic blood pressure would be marked increased and these artilleries do not collapse when they are empty only the muscular Coat contracts somewhat in the region of openings .
Vein - the veins returns the blood to the heart the structure of the veins is similar to that of arteries veins tends to collapse when not filled with blood in general the total diameter of the veins returning blood from any organ is at least twice the diameter of the arteries carrying blood to the organs the veins of lower Limbs have greater number of valves than those of the upper Limb these valvesare not found in many veins .
capillaries - the capillaries are really minute vessels and they connect arterioles the venues.