The subscapularis muscle is innervated by which nerve?

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Multiple Choice

The subscapularis muscle is innervated by which nerve?

Explanation:
Subscapularis receives its motor input from the subscapular nerves, branches of the posterior cord of the brachial plexus. These nerves specifically innervate subscapularis (and, for the lower branch, teres major). That’s why the subscapular nerve is the correct choice. The suprascapular nerve goes to the supraspinatus and infraspinatus; the axillary nerve to deltoid and teres minor; the dorsal scapular nerve to rhomboids and levator scapulae.

Subscapularis receives its motor input from the subscapular nerves, branches of the posterior cord of the brachial plexus. These nerves specifically innervate subscapularis (and, for the lower branch, teres major). That’s why the subscapular nerve is the correct choice. The suprascapular nerve goes to the supraspinatus and infraspinatus; the axillary nerve to deltoid and teres minor; the dorsal scapular nerve to rhomboids and levator scapulae.

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