The correct sequence of events during normal expiration is: I. Relaxation of diaphragm…
Biology · NEET · NTA Exams — Breathing and Exchange of Gases
The correct sequence of events during normal expiration is:
I. Relaxation of diaphragm and intercostal muscles.
II. Contraction of the diaphragm.
III. Increase in intra-pulmonary pressure above atmospheric pressure.
IV. Expulsion of air from the lungs.
V. Decrease in thoracic volume.
Choose the correct option from the following:
- I, V, III, IV
- II, V, III, IV
- I, III, V, IV
- II, I, V, IV
Answer
(A) I, V, III, IV
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