Which is (are)an action of the sternocleidomastoid?
A)extension of the lower neck at the spinal joints
B)extension of the upper neck and head at the spinal joints
C)ipsilateral rotation of the neck and head at the spinal joints
D)depression of the scapula at the scapulocostal joint

Question

Quizplus · Accepted Answer

The sternocleidomastoid muscle is responsible for the extension of the upper neck and head at the spinal joints, among other actions.

Which Is (Are)an Action of the Sternocleidomastoid