alleryStart learning →Besides muscle wasting, what else do astronauts lose in microgravity?
ABlood cells of every type
BNerve tissue in the spine
CWater from the skeleton only
DMass from their bones
Answer & Solution
Correct answer: D. Mass from their bones
1. Muscles atrophy in microgravity because the load they normally carry is gone.
2. Bone responds to load in the same way, so there is a corresponding loss of bone mass.
3. The two losses run together over an extended stay in orbit.
4. Cardiovascular adaptation is studied alongside them and is still under investigation.
_Source: OpenStax College Physics (CC BY 4.0), Ch 6 "Uniform Circular Motion and Gravitation", section "Weightlessness" and Microgravity_
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