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Question: Answered & Verified by Expert
What happens to the thoracic and pulmonary volumes when the diaphragm and intercostal muscles relax?
BiologyBreathing and Exchange of GasesNEET
Options:
  • A They increase
  • B They decrease
  • C They stay the same
  • D They fluctuate
Solution:
1210 Upvotes Verified Answer
The correct answer is: They decrease
The relaxation of the diaphragm and intercostal muscles reduces the thoracic volume and thereby the pulmonary volume.

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