Asked by musab iqbal on May 09, 2024
Verified
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.
- Recognize the muscles involved in breathing and their unique roles in the process.
Verified Answer
LK
Laura KirgissMay 14, 2024
Final Answer :
D
Explanation :
During forced expiration, the internal intercostal muscles contract to depress the ribs, which decreases the volume of the thoracic cavity and forces air out of the lungs.
Learning Objectives
- Recognize the muscles involved in breathing and their unique roles in the process.