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Questions and Answers
What is the first fundamental force described in the text?
What is the first fundamental force described in the text?
- Electromagnetic force
- Strong nuclear force
- Gravitational force (correct)
- Weak nuclear force
What is one of the important medical effects of gravitational force mentioned in the text?
What is one of the important medical effects of gravitational force mentioned in the text?
- Increased lung capacity
- Enhanced muscle flexibility
- Formation of varicose veins in the legs (correct)
- Improved digestion
What happens to bone mineral when a person becomes 'weightless'?
What happens to bone mineral when a person becomes 'weightless'?
- May lose some bone mineral (correct)
- Bone mineral increases
- 'Weightlessness' leads to excessive bone mineral accumulation
- 'Weightlessness' has no effect on bone mineral
Which force causes our weight due to the attraction between the earth and our bodies?
Which force causes our weight due to the attraction between the earth and our bodies?
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What is one of the serious problems associated with long-term bed rest?
What is one of the serious problems associated with long-term bed rest?
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Study Notes
Gravity and Its Effects
- The first fundamental force described in the text is gravity, which is responsible for the attraction between objects with mass.
- One of the important medical effects of gravitational force is the loss of bone density, which can lead to osteoporosis.
- When a person becomes 'weightless', bone mineral density decreases, leading to a loss of bone strength.
- Gravity is the force that causes our weight, which is a result of the attraction between the earth and our bodies.
- One of the serious problems associated with long-term bed rest is the loss of bone density, similar to the effects of weightlessness.
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