Describe blood circulation in human in a detailed manner .
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Answer:
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The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart. The system of blood vessels resembles a tree: The “trunk” – the main artery (aorta) – branches into large arteries, which lead to smaller and smaller vessels. The smallest arteries end in a network of tiny vessels known as the capillary network.
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Answer:
the blood circulation is mainly done by the our heart the pumping organ the red blood cells contains hemoglobin which absorb oxygen this red blood cell circles the body about 20 seconds which gives Oxygen and other needed materials to other part of the body and when this red blood cells get oxygen they become oxyhaemoglobin because they have hemoglobin as a explain earlier after this oxygen is given to the cell they become deoxygenated so they returns to the veins and go to heart and then to the legs to get more oxygen this this is the complete blood circulation