Rhomboid Major is innervated by which nerve?

Rhomboid Major is innervated by which nerve?

• A. Dorsal scapular nerve
• B. Axillary nerve
• C. Musculocutaneous nerve
• D. Medial pectoral nerve

Answer: (A)

The main concept here is that the rhomboid group is supplied by a nerve that specifically targets the scapular retractors. The rhomboid major (and rhomboid minor) receive motor innervation from the dorsal scapular nerve, which comes from the C5 root. This nerve travels to the deep surface of the rhomboids to provide their action—pulling the scapula medially and helping stabilize the shoulder blade. Understanding the other options helps reinforce this. The axillary nerve goes to the deltoid and teres minor, not the rhomboids. The musculocutaneous nerve innervates forearm flexors in the arm, not muscles of the scapular retractors. The medial pectoral nerve supplies the pectoralis major and minor. None of these reach the rhomboids, whereas the dorsal scapular nerve is the direct source for their motor innervation.

The main concept here is that the rhomboid group is supplied by a nerve that specifically targets the scapular retractors. The rhomboid major (and rhomboid minor) receive motor innervation from the dorsal scapular nerve, which comes from the C5 root. This nerve travels to the deep surface of the rhomboids to provide their action—pulling the scapula medially and helping stabilize the shoulder blade.

Understanding the other options helps reinforce this. The axillary nerve goes to the deltoid and teres minor, not the rhomboids. The musculocutaneous nerve innervates forearm flexors in the arm, not muscles of the scapular retractors. The medial pectoral nerve supplies the pectoralis major and minor. None of these reach the rhomboids, whereas the dorsal scapular nerve is the direct source for their motor innervation.