The major nonelastic source of resistance to air flow in the respiratory passageways is ________.
A) surfactant
B) surface tension
C) friction
D) air pressure

Question

Quizplus · Accepted Answer

Friction is the major nonelastic source of resistance to airflow in the respiratory passageways. This is due to the contact between the air and the walls of the passageways, which creates resistance and slows down the movement of air. Surfactant and surface tension play a role in reducing friction and maintaining the patency of the alveoli, but they are not the major source of resistance to airflow. Air pressure is also not a nonelastic source of resistance to airflow.

The Major Nonelastic Source of Resistance to Air Flow in the Respiratory