Which of the following statements is true?
A) Intrapleural pressure is always greater than intrapulmonic pressure.
B) Intrapleural pressure is always less than atmospheric pressure.
C) Intrapulmonic pressure is always greater than atmospheric pressure.
D) Intrapulmonic pressure is always less than atmospheric pressure.

Question

Quizplus · Accepted Answer

Intrapleural pressure is always less than atmospheric pressure. This negative pressure is what keeps the lungs inflated and allows for gas exchange during breathing. Intrapulmonic pressure can vary depending on the stage of respiratory cycle and volume of air in the lungs, but it can be equal to, greater than, or less than atmospheric pressure.

Which of the Following Statements Is True