Which two muscles are innervated by the dorsal scapular nerve?

• A. Trapezius and Latissimus dorsi
• B. Rhomboids and Levator scapulae
• C. Deltoid and Supraspinatus
• D. Subscapularis and Infraspinatus

Answer: (B)

The dorsal scapular nerve primarily innervates the rhomboid muscles (major and minor) as well as the levator scapulae. This nerve stems from the ventral rami of the cervical nerves, typically C5, and plays a critical role in the function of the scapula.

The rhomboids are responsible for retracting the scapula, aiding in movements such as pulling the shoulders back. The levator scapulae elevates the scapula and assists in neck movement. Proper innervation is key to muscle contraction and coordination in these areas, which are vital for upper extremity mobility and stability.

The other options present muscles innervated by different nerves or have roles that do not involve the dorsal scapular nerve. Understanding this innervation assists in recognizing the functions of these muscles in movements and postural adjustments, reinforcing the importance of the dorsal scapular nerve in shoulder girdle dynamics.