01 Oct Blood Circulatory System
Science tuition class in Miracle Learning Centre is fun and enriching. You will learn about the different aspects of Science and how to learn study skills too. If you do not like or understand science, you must definitely attend the Science tuition class at Miracle Learning Centre to arouse and reignite your interest. Let us learn about the Blood Circulatory System in this Science tuition lesson.
Blood Circulatory System consists of the heart, blood vessels and blood. The right side of the heart pumps blood to the lungs where carbon dioxide produced by respiration is removed from the body and oxygen from the air is absorbed into the bloodstream. On the other hand, the left side of the heart pumps oxygenated blood to the rest of the body.
Deoxygenated blood from the rest of the body enters the right atrium and then into the right ventricle. The blood passes from the right ventricle, then out to the lungs. In the lungs, oxygen diffuses into the blood while carbon dioxide diffuses out of the blood.
Oxygenated blood from the lungs enters the left atrium and then the left ventricle. Oxygenated blood is pumped by the left ventricle to the rest of the body along the arteries. The artery is under high pressure and blood flows from the arteries to the capillaries, then to the veins.
Exchange of gases, nutrients and waste materials take places through the thin walls of the capillaries. As blood passes the small intestine, it picks up small and digested food molecules. The capillaries join other capillaries to form the veins which carry deoxygenated blood back to the right side of the heart. The process is then repeated and is called a double circulation because blood passes through the heart twice.
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