Air enters the lungs during inspiration mainly because the pressure inside the lungs becomes

Options

  • A. Higher than atmospheric pressure
  • B. Lower than atmospheric pressure
  • C. Equal to zero
  • D. Unrelated to atmospheric pressure
  • E. Constantly higher than atmospheric pressure

Correct Answer (Detailed Explanation is Below)

B. Lower than atmospheric pressure

Detailed Explanation

Expansion of the thoracic cavity lowers intrapulmonary pressure below atmospheric pressure, allowing air to flow into the lungs.

Attempt Quiz Now:

BPSC TRE 4 General Science practice set 3

Feature Posts