2023年10月30日 · The trapezius muscle is the only muscle of the upper limb that does not receive its innervation from the brachial plexus. Instead, motor innervation to the trapezius is conveyed by the accessory nerve (CN XI) as well as the anterior rami of the C3 and C4 spinal nerves, which also contain proprioceptive/sensory fibers from the muscle.

2023年6月29日 · Trapezius muscles are important for posture as well as shoulder and arm movement. Learn more about their anatomy, function, and causes of pain.

2023年11月7日 · The trapezius is a large muscle extending from the base of the neck down to the upper-middle back. It is a superficial muscle and an extrinsic muscle of the back. Still, it is considered an upper limb muscle instead of a back muscle because of its involvement in the movement of the shoulder girdle.

Trapezius, Upper – Anterior View Function draws the lateral clavicle medially toward the spine, rotating the pectoral girdle upward as it pivots on the sternoclavicular joint

The serratus anterior works in conjunction with the lower trapezius to rotate the scapula upward during arm elevation, allowing the arm to lift smoothly above shoulder height. It also prevents scapular winging, ensuring efficient shoulder movement, especially during pushing or …

2025年1月27日 · The trapezius works synergistically with other muscles for coordinated shoulder and neck movements: Levator Scapulae and Rhomboids: Assist in scapular elevation and retraction. Serratus Anterior: Works with the trapezius …

Explore the anatomy, function, and role of the trapezius muscle with Innerbody's interactive 3D model. The trapezius is one of the major muscles of the back and is responsible for moving, rotating, and stabilizing the scapula (shoulder blade) and extending the head at the neck.