Which of the following is true of forced expiration during labored breathing?
A) Internal intercostal muscles and abdominal muscles contract
B) External intercostal muscles and diaphragm contract
C) There is not active muscle contraction and the external intercostal muscles and diaphragm relaxes and lungs recoil
D) None of the above is correct

Question

Quizplus · Accepted Answer

During forced expiration, such as during labored breathing, the internal intercostal muscles and abdominal muscles contract to help push air out of the lungs.

Which of the Following Is True of Forced Expiration During