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Human Body in Space. Effect of space on Human body 1) Effect on cardiovascular
system Human beings living on Earth are affected by ...
human body in space. My report is on the human body in space. There are many
things that come into planning a space launch. For example ...
... The body, Dave Bowman, becomes a metaphor for the human mind ... This can be seen by
the alarming contrast between the red space suit Dave initially wears ...
... The body, Dave Bowman, becomes a metaphor for the human mind ... This can be seen by
the alarming contrast between the red space suit Dave initially wears ...
... The body, Dave Bowman, becomes a metaphor for the human mind ... This can be seen by
the alarming contrast between the red space suit Dave initially wears ...
Submitted by MissMen on April 26, 2007
Category: Science
Words: 847 | Pages: 4
Views: 228
Popularity Rank: 45,041
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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 after nearly 10 days of weightlessness. The loss of calcium in urine may produce urinary stone, which might cause severe pain, the decrease of bone density will lead to bone fracture. Therefore, countermeasures are necessary.
One countermeasure proposed to prevent bone loss is onboard exercise mainly with the treadmill and ergo meter.
3) Effects on muscle
The human body floats within the orbiting spacecraft. Therefore, astronauts can move around in spacecraft just by softly pushing against its wall. In a micro gravity environment, muscles rapidly weaken due to the lack of use.
4) Space motion sickness
A few minutes or a few hours after entering weightlessness, astronauts experience space motion sickness, which is characterized by headaches, malaise, nausea and vomiting. Sixty to seventy percent of the astronauts experience these symptoms.
5) Effect on hematologic and immunologic system
One...
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