Question

1 All of the following actions are part of exhalation EXCEPT
A the nb cage contracts inward
B. the volume of the chest cavity decreases
C the diaphragm contracts and pulls downward
D the pressure within the chest cavity increases​

Answer 1

Answer:

expect D

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Answer 2

The correct option is- C the diaphragm contracts and pulls downward.

• Exhalation is the process of movement of air from the lungs to the surroundings during breathing.
• During exhalation, the diaphragm is relaxed and moves upward into the chest cavity while ribs contracts and move inward.
• Due to this, the volume of the chest cavity decreases and the pressure increases which results in the flow of air outside the lungs to the external environment through the nose.