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Blood Circulatory System:- The blood circulatory system is one of the most organ system in the body of animals.  It transmits  nutrients and  oxygen to the parts of body. And takes carbon dioxide from the cells of body.  Hemodynmics is the study of blood flow. And the study of the properties of blood flow is called  hemorheology. Blood circulatory system is also called cardiovascular system or vascular system. Humans have  closed blood circulatory system. The blood never leaves the blood vessels. In contrast, oxygen,  carbon dioxide and nutrients diffuse across the vessels.  Blood circulatory system consists of Heart, Blood and vessels(Arteries, Capillaries, Veins).  Heart:- The heart pumps the oxygenated blood to the body and the deoxygenated blood to the lungs.  There are four chambers of the heart.  i-Left Atrium:- The left atrium receives oxygenated blood from the lungs. ii-Right Atrium:- It is t...