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16 October, 17:50

Describe the flow of blood in the human body, including through each of the four chambers of the heart. Explain how the blood changes as it moves through various locations in the body.

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  1. 16 October, 19:39
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    The circulatory system is important in meeting the needs of all cells in the body because it offers means of transport by which cells obtain the materials needed to live and function. The functions of the circulatory system by which the cells are supported include: 1. Respiration - oxygen is delivered to the cells and carbon dioxide is removed from them. 2. Nutrition - nutrients for energy are supplied to every cell in the body. 3. Waste removal - metabolic waste products are taken away before they accumulate and become harmful to the cells. 4. Cellular communication - hormones are transported to the cells and organs that need them for proper functioning. 5. Thermoregulation - As blood circulates, it keeps body temperature balanced and thus cells are able to carry out processes well.
  2. 16 October, 21:45
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    Blood is termed as the fluid which consists of white blood cells, red blood cells, plasma, and platelets which are originated by the heart, through the vertebrate vascular system, which carries nutrients and oxygen and wastes material away from body tissues.

    Blood circulatory system has two components which are pulmonary circulation and systemic circulation. Human body has four heart chambers which consists of right and left ventricles, and right and left atrium.

    Atria are the upper two chambers where the right atrium holds and receives deoxygenated blood from inferior vena cava, anterior vena cava, and superior vena cava

    It is then send to right ventricle which then sends to pulmonary artery for the purpose of pulmonary circulation.

    Left atrium receives oxygenated blood from right and left pulmonary veins which pump to left ventricle which then pumps out through the aorta for systemic circulation to take place.
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