Question

the sternocleidomastoid muscle inserts on the

a) mastoid process of the temporal bone

b) clavicle

c) platysma

d) sternum

Explanation:

The sternocleidomastoid muscle has its insertion on the mastoid process of the temporal bone. The clavicle and sternum are its origins, and the platysma is a different muscle.

Answer:

A. mastoid process of the temporal bone