Where does the sternocleidomastoid insert? (Which bone features the insertion?)

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Prepare for the NHI Eastern Kinesiology Test with our comprehensive quiz. Utilize flashcards and multiple-choice questions, complete with hints and detailed explanations. Ready yourself for success!

Multiple Choice

Where does the sternocleidomastoid insert? (Which bone features the insertion?)

Explanation:
The part being tested is where the sternocleidomastoid attaches at its end. It inserts on the mastoid process of the temporal bone and on the lateral portion of the superior nuchal line of the occipital bone. This dual insertion lets the muscle pull the head to the opposite side and assist with flexing the neck when both heads contract. The clavicle and manubrium are the origins of the two heads, not insertions, and the spinous process of the occipital bone isn’t where this muscle attaches—its insertion is on the mastoid process and the superior nuchal line.

The part being tested is where the sternocleidomastoid attaches at its end. It inserts on the mastoid process of the temporal bone and on the lateral portion of the superior nuchal line of the occipital bone. This dual insertion lets the muscle pull the head to the opposite side and assist with flexing the neck when both heads contract. The clavicle and manubrium are the origins of the two heads, not insertions, and the spinous process of the occipital bone isn’t where this muscle attaches—its insertion is on the mastoid process and the superior nuchal line.

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