Outer Space
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The document discusses the environmental conditions and human limits in outer space, including the absence of light, air, atmospheric pressure and gravity. It notes that humans can only survive unprotected for 2 minutes and need oxygen immediately to recover. The risks to the respiratory, circulatory and muscular systems in space include gases expanding in the lungs, explosive decompression, nitrogen bubbles in the blood, blood boiling, heart stopping, muscles and tissues evaporating, and swelling due to lack of pressure. Proper equipment like space suits and lunar roving vehicles are needed to allow humans to operate in the hostile environment of outer space.
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Outer Space
- 1. Outer Space Rachel Ourada
- 2. Environmental Conditions Absence of light (no one light source) Cold Absence of atmospheric pressure Absence of air No pull of gravity
- 3. Human Limits and Maximum Time They Can Cope Human can survive 2 minutes unprotected Need oxygen immediately to recover
- 4. Respiratory System Gases in lungs expand Explosive decompression Hypoxia
- 5. Circulatory System Explosive decompression Nitrogen dissolved in blood causes gaseous bubbles Blood pressure falls, blood begins to boil, heart stops beating
- 6. Muscular System Absence of atmospheric pressure Muscles and soft tissues evaporate Swelling
- 7. Proper clothing Space suit worn by Neil Armstrong
- 8. Special equipment Apollo 17 Lunar Roving Vehicle