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ZoologyNEET 2020Respiratory organs and mechanism of breathing

Breathing and Exchange of Gases

Select the correct events that occur during inspiration.

(a) Contraction of the diaphragm

(b) Contraction of the external inter-costal muscles

(c) Pulmonary volume decreases

(d) Intra-pulmonary pressure increases

  1. A.(a) and (b)✓
  2. B.(c) and (d)
  3. C.(a), (b) and (d)
  4. D.Only (d)

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