Anterior Perspective of the C5 Root of the Brachial Plexus

Description

Emerging from the intervertebral foramen between the C4 and C5 vertebrae, the C5 ventral ramus is traced in anterior perspective as it passes laterally across the prevertebral region toward the posterior triangle of the neck. Inferior and slightly lateral to it, the C6 root courses in parallel so the two can be followed as they converge to form the superior trunk of the brachial plexus, positioned superior to the clavicle and lateral to the cervical spine. Bony landmarks such as the mandible, clavicle, ribs, and upper thoracic cage remain visible for orientation, while the neural elements are isolated without overlying musculature. Spatial relationships are clear. That C5 to C6 union is a key teaching point because it sets up the downstream organization into divisions and cords named for their relationship to the axillary artery, and it also explains the classic deficit patterns seen with traction injuries. An upper trunk lesion, often discussed in the context of Erb-Duchenne palsy, maps neatly onto the roots shown here and helps learners connect shoulder abduction and elbow flexion weakness to a specific anatomic bottleneck just above the clavicle. Clinicians also refer back to this segment when planning regional anesthesia, since interscalene brachial plexus blocks preferentially affect C5 to C7 fibers and can spare the ulnar distribution. Use this artwork for brachial plexus modules in gross anatomy and neuroanatomy courses, for surgical education on supraclavicular exposure, or for textbooks and patient-facing materials that need a clean anterior map from cervical roots to trunk formation. It also supports exam-prep figures that correlate root and trunk levels with dermatomes and myotomes. Anatomical accuracy verified by SciePro's Medical Advisory Board.