Which of the Following Muscles Change the Size of the Chest

Question

Which of the following muscles change the size of the chest for breathing?
A) transverses abdominis muscle
B) external oblique muscles
C) transverses thoracis muscle
D) intercostal muscles

Accepted Answer

The intercostal muscles are the muscles located between the ribs that change the size of the chest for breathing. The transverses abdominis muscle and external oblique muscles are both involved in abdominal muscle contractions, but not breathing. The transverses thoracis muscle is a small muscle located in the thoracic region of the body, but it does not play a significant role in chest expansion for breathing.