Which of the following muscles contracts during forced expiration?

A) Scalenes
B) Diaphragm
C) Linea alba
D) Internal intercostals
E) External intercostals

Forced Expiration

The act of expelling air from the lungs with effort after a maximal inhalation, often measured during pulmonary function tests.

Internal Intercostals

Internal intercostals are muscles located between the ribs that help with the process of forced expiration by drawing the ribs downward and inward.

Scalenes

A group of muscles in the neck that assist in the process of respiration by elevating the ribs and flexing the neck.