Forced breathing during exhalation involves contraction of the internal intercostal muscles and the
A) scalenes.
B) diaphragm.
C) abdominal muscles.
D) external intercostals.
E) serratus anterior.

Question

Quizplus · Accepted Answer

During forced breathing, exhalation is aided by the contraction of the internal intercostal muscles and the abdominal muscles. The scalenes and serratus anterior are involved in inhalation, while the diaphragm and external intercostals aid in both inhalation and exhalation.

Forced Breathing During Exhalation Involves Contraction of the Internal Intercostal