Discussion :: Biology
- When the diaphragm and external intercostal muscles contract,
|
A.
The volume of the thorax decreases |
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B.
The volume of the lungs decreases |
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C.
The volume of the thorax increases |
|
D.
The lungs shrink |
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Answer : Option C
Explanation :
When the diaphragm and external intercostal muscles contract, the volume of the thorax increases.
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