Which of the following describes the insertion of the trapezius muscle?

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Multiple Choice

Which of the following describes the insertion of the trapezius muscle?

Explanation:
The main concept here is where the trapezius attaches to bone. The trapezius inserts on multiple sites: the lateral third of the clavicle, the acromion, and the spine of the scapula. Saying clavicle and scapular spine captures two of these key attachment points, which together describe its insertion pattern in a concise way. The acromion is also an insertion site, so mentioning it along with either the clavicle or the scapular spine is true but incomplete if only one is listed. The acromion alone misses the clavicle and the spine attachment, and the medial border of the scapula is not a trapezius insertion at all.

The main concept here is where the trapezius attaches to bone. The trapezius inserts on multiple sites: the lateral third of the clavicle, the acromion, and the spine of the scapula. Saying clavicle and scapular spine captures two of these key attachment points, which together describe its insertion pattern in a concise way. The acromion is also an insertion site, so mentioning it along with either the clavicle or the scapular spine is true but incomplete if only one is listed. The acromion alone misses the clavicle and the spine attachment, and the medial border of the scapula is not a trapezius insertion at all.

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