The internal intercostal muscles are important for a:
A)normal exhalation
B)normal inhalation
C)forced exhalation
D)deep inhalation

Question

Quizplus · Accepted Answer

The internal intercostal muscles are responsible for forced exhalation, which helps to expel air from the lungs more quickly and forcefully than during normal exhalation. During forced exhalation, the internal intercostal muscles contract to pull the ribs downward and decrease the size of the thoracic cavity, which increases the pressure in the lungs and helps to push air out. The internal intercostals are not involved in normal inhalation or normal exhalation, and they are not necessary for deep inhalation.

The Internal Intercostal Muscles Are Important for A