Question

Select the correct statement.

• A. Expiration occurs due to external intercostal muscles
• B. Intrapulmonary pressure is lower than the atmospheric pressure during inspiration
• C. Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure.
• D. Expiration is initiated due to contraction of diaphragm.

Answer 1

Answer: (B)

Correct answer is (b) Intrapulmonary pressure is lower than the atmospheric pressure during inspiration