What nerve innervates the rhomboid major?

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Multiple Choice

What nerve innervates the rhomboid major?

Explanation:
The rhomboid major is innervated by the dorsal scapular nerve, a motor branch that typically arises from the C5 ventral ramus (often with a contribution from C4). This nerve travels to the deep surface of the rhomboid muscles and provides the motor supply that enables their action. The rhomboids function to retract (adduct) the scapula and help downwardly rotate it, stabilizing the shoulder girdle. If the dorsal scapular nerve is affected, these movements weaken, highlighting its role. The other nerves listed don’t supply the rhomboids. The axillary nerve goes to the deltoid and teres minor; the median nerve supplies many forearm and hand muscles; the thoracodorsal nerve innervates the latissimus dorsi.

The rhomboid major is innervated by the dorsal scapular nerve, a motor branch that typically arises from the C5 ventral ramus (often with a contribution from C4). This nerve travels to the deep surface of the rhomboid muscles and provides the motor supply that enables their action. The rhomboids function to retract (adduct) the scapula and help downwardly rotate it, stabilizing the shoulder girdle. If the dorsal scapular nerve is affected, these movements weaken, highlighting its role.

The other nerves listed don’t supply the rhomboids. The axillary nerve goes to the deltoid and teres minor; the median nerve supplies many forearm and hand muscles; the thoracodorsal nerve innervates the latissimus dorsi.

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