Which statement regarding respiration is true?
A) The sternocleidomastoid muscle elevates the rib cage.
B) Internal intercostal muscles elevate the rib cage.
C) The rectus abdominis muscle elevates the rib cage.
D) The external intercostal muscles lower the rib cage.
E) Elevation of the rib cage decreases the volume of the thoracic cavity.

Question

Quizplus · Accepted Answer

The sternocleidomastoid muscle, along with the scalene muscles, are responsible for elevating the rib cage during respiration. This action allows for increased volume and air intake in the lungs.

Which Statement Regarding Respiration Is True