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

Question

Quizplus · Accepted Answer

The sternocleidomastoid eccentrically contracts to restrain or slow down ipsilateral rotation of the neck and head at the spinal joints. It does not restrain or slow down flexion or extension of the neck or depression of the scapula.

Which Is (Are)an Eccentric Function of the Sternocleidomastoid