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NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES
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In humans, the contraction of which of the following muscle causes an increase in the volume of thoracic chamber in dorso-ventral axis?
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Correct option: C
External intercostal muscles
Option C (External intercostal muscles) is correct because contraction of the external intercostal muscles elevates the rib cage, increasing the thoracic volume in the dorso-ventral axis.
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suffocation.
Reason : Atmospheric air contains far less
oxygen content than the dissolved oxygen in
water. The faster breathing in high fever is due to the