Human Body In Space
Effect of space on Human body
1) Effect on cardiovascular system
Human beings living on Earth are affected by gravity because about two-thirds of our daily activities are standing or sitting. Because of this great amounts of body fluids such as blood pool in the lower part of the body. The human body is equipped with various mechanisms to oppose gravity to maintain sufficient blood flow to the brain.
In micro gravity environment, the quantity and the distribution of body fluid alters since it is free of the gravitational effect. This is the known as "fluid shift." Symptoms caused by fluid shift are stuffy nose, headache, and puffy face.
2) Effects on bone
Bones are systems involved in maintaining posture. The adult human body has 1,000 to 1,200 grams of calcium and 400 to 500 grams of phosphorus. However, once gravitational stress is removed, bone calcium and phosphorus are excessively excreted in urine and faeces. It is seen that 3.2% of average bone loss occurred......
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