Origin and insertion of which of the following muscles can be seen clearly from outside?

 # Origin and insertion of which of the following muscles can be seen clearly from outside?

A. Masseter

B. Platysma

C. Sternocleidomastoid

D. All of the above

The correct answer is C. Sternocleidomastoid.

Sternocleidomastoid forms the most important landmark on the side of the neck. It becomes prominent

when the face is turned to the opposite side and is seen as a raised ridge extending obliquely from the sternum to the mastoid process. It is the key muscle of the neck which extends obliquely across the side of the neck, dividing it into posterior and anterior triangles.

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