Audio LecturePro Feature Dorsal Scapular Nerve 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The dorsal scapular nerve is a motor nerve of the scapular region. It supplies motor innervation to the rhomboid major, rhomboid minor and levator scapulae muscles. 3D ModelPro Feature You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Course The dorsal scapular nerve arises from the brachial plexus, most commonly as a direct branch of the C5 spinal root. From its origin, it passes inferiorly and pierces the middle scalene muscle. The dorsal scapular nerve then descends between the deep surface of the levator scapula (which it supplies with motor innervation) and the superficial surfaces of the serratus posterior and posterior scalene. It then passes under the deep surface of the rhomboid muscles, terminating into numerous motor branches. Adobe Stock, Licensed to TeachMeSeries Ltd Fig 1Course of the dorsal scapular nerve Motor Functions The dorsal scapular nerve provides motor innervation to the rhomboid major, rhomboid minor, and levator scapulae muscles. By TeachMeSeries Ltd (2026) Fig 2The superficial muscles of the back Frequent questions What is the dorsal scapular nerve? The dorsal scapular nerve is a motor nerve that innervates the muscles in the scapular region, specifically the rhomboid major, rhomboid minor, and levator scapulae. It plays a crucial role in shoulder movement and stability. What muscles are innervated by the dorsal scapular nerve? The dorsal scapular nerve supplies motor innervation to three key muscles: the rhomboid major, rhomboid minor, and levator scapulae. These muscles are essential for the retraction and elevation of the scapula. Where does the dorsal scapular nerve originate? The dorsal scapular nerve typically arises as a direct branch from the C5 spinal root of the brachial plexus. This anatomical origin is important for understanding its function and potential injury sites. How does the dorsal scapular nerve course through the body? After originating from the C5 spinal root, the dorsal scapular nerve descends, piercing the middle scalene muscle and travelling between the levator scapulae and the serratus posterior. It ultimately passes beneath the rhomboid muscles, where it branches out to supply motor innervation. What is the clinical significance of the dorsal scapular nerve? Injury to the dorsal scapular nerve can lead to weakness in the rhomboid major and minor, as well as the levator scapulae, resulting in impaired scapular movement. Understanding its course and innervation is vital for diagnosing shoulder dysfunctions. Rate This Article