The long head of the triceps brachii attaches proximally to which bone?

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Multiple Choice

The long head of the triceps brachii attaches proximally to which bone?

Explanation:
The long head of the triceps brachii originates from the scapula, specifically the infraglenoid tubercle just below the glenoid cavity. This places its proximal attachment on the shoulder blade, distinguishing it from the other heads, which originate on the humerus. The clavicle and sternum are not attachment sites for the triceps. In short, the proximal anchor of the long head is the scapula.

The long head of the triceps brachii originates from the scapula, specifically the infraglenoid tubercle just below the glenoid cavity. This places its proximal attachment on the shoulder blade, distinguishing it from the other heads, which originate on the humerus. The clavicle and sternum are not attachment sites for the triceps. In short, the proximal anchor of the long head is the scapula.

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