Expiratory Movements are Produced by Contraction of the ________ Muscle

Question

Expiratory movements are produced by contraction of the ________ muscle.
A) scalene
B) diaphragm
C) internal intercostal
D) external intercostal
E) serratus anterior

Accepted Answer

Expiratory movements are produced by the contraction of the internal intercostal muscle. The internal intercostal muscle is located between the ribs and functions to pull the ribs downward and inward during expiration.