Effects_Of_Microgravity_On_Human_Circulatory_System

Effects Of Microgravity On Human Circulatory System The heart is the main pump that forces blood through the blood vessels of the body. There are four open spaces, or cavities, inside the heart that fill with blood. The two upper cavities are the atria and the two lower cavities are the ventricles. The blood coming from the lungs travels to the heart and to all the cells in the body. Once having removed the cells’ wastes (carbon dioxide), the blood returns to the heart and lungs to pick up a fresh supply of oxygen. The left ventricle pumps blood that has received oxygen (from the lungs) to the brain and all the organs and extremities of the body (Committee on Space Biology and Medicine et al 118). Weakening of the left ventricle is a serious problem that affects thousands of patients. (Harvey 10) If we take an anatomical view of the heart, it seems to resemble skeletal muscle in the sense that when not used for prolonged periods of time, the tissue weakens (this condition is called atrophy). (Committee on Space Biology and Medicine et al 102) With exercise, an athlete will strengthen his heart muscle and make it blood, space, pressure, body, heart, flow, gravity, earth, vessels, skylab, muscle, medicine, lower, lungs, head, et, effects, committee, circulatory, causes, biology, belew, al, after, weightlessness, upper, studies, standing, resulting, pump, medical, man, loss, flight