The insertion of the trapezius middle fibers is on which part of the scapula?

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Multiple Choice

The insertion of the trapezius middle fibers is on which part of the scapula?

Explanation:
The middle fibers of the trapezius attach to the acromion and the spine of the scapula, which lets them pull the shoulder blade medially to retract the scapula. Among the options, the acromion is the correct site because it is the scapular landmark where this portion of the trapezius anchors, enabling retraction. The spinous process belongs to the vertebrae, not the scapula, so that choice isn’t applicable. The clavicle is where the upper trapezius attaches, not the middle portion, and the coracoid process is a different scapular feature that the middle fibers do not insert into.

The middle fibers of the trapezius attach to the acromion and the spine of the scapula, which lets them pull the shoulder blade medially to retract the scapula. Among the options, the acromion is the correct site because it is the scapular landmark where this portion of the trapezius anchors, enabling retraction. The spinous process belongs to the vertebrae, not the scapula, so that choice isn’t applicable. The clavicle is where the upper trapezius attaches, not the middle portion, and the coracoid process is a different scapular feature that the middle fibers do not insert into.

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