A stab wound to the chest causes the lung to collapse because
A)of a sudden increase in surface tension.
B)intrapulmonic pressure becomes less than atmospheric pressure.
C)intrapulmonic pressure becomes higher than intrapleural pressure.
D)intrapleural pressure becomes greater than intrapulmonic pressure.

Question

Quizplus · Accepted Answer

Intrapleural pressure becomes greater than intrapulmonic pressure, causing the lung to collapse. Normally, the intrapleural pressure is less than the intrapulmonic pressure, helping to keep the lungs expanded. A stab wound allows air to enter the pleural space, increasing the intrapleural pressure above that of the intrapulmonic pressure, leading to a collapsed lung.

A Stab Wound to the Chest Causes the Lung to Collapse