Which nerve innervates rhomboid minor?

Which nerve innervates rhomboid minor?

• A. Dorsal scapular nerve (C4-C5)
• B. Spinal accessory nerve
• C. Thoracodorsal nerve
• D. Long thoracic nerve

Answer: (A)

Rhomboid minor is innervated by the dorsal scapular nerve, which typically carries fibers from C5 (with possible C4 contribution). This nerve runs to the medial border of the scapula and provides the motor supply to both rhomboid muscles, enabling their role in retracting and elevating the scapula. The other nerves supply different muscles: the spinal accessory nerve goes to the trapezius (and SCM), the thoracodorsal nerve to the latissimus dorsi, and the long thoracic nerve to the serratus anterior. Thus, the dorsal scapular nerve is the correct innervation for rhomboid minor.

Rhomboid minor is innervated by the dorsal scapular nerve, which typically carries fibers from C5 (with possible C4 contribution). This nerve runs to the medial border of the scapula and provides the motor supply to both rhomboid muscles, enabling their role in retracting and elevating the scapula. The other nerves supply different muscles: the spinal accessory nerve goes to the trapezius (and SCM), the thoracodorsal nerve to the latissimus dorsi, and the long thoracic nerve to the serratus anterior. Thus, the dorsal scapular nerve is the correct innervation for rhomboid minor.