Browse the corpus

The neck contains numerous neurovascular structures organized into defined anatomic compartments. The anterior and posterior triangles represent the principal subdivisions, delineated by consistent surface landmarks (see Image. Superficial Neck Anatomy). Each triangle contains muscles, nerves, arteries, veins, and lymphatics arranged within fascial planes that facilitate surgical orientation and clinical localization. Vascular supply to this region arises primarily from branches of the carotid and subclavian arteries, while innervation derives largely from cranial nerves and the cervical plexus. Documented anatomic variants involve vascular branching patterns, muscular attachments, and nerve courses. The cervical triangles serve as important clinical landmarks for localizing neurovascular structures, evaluating cervical lymphadenopathy, and identifying the source or spread of head and neck infections and malignancies. Surgical procedures in the neck, including carotid endarterectomy, thyroidectomy, and cervical lymph node dissection, rely on these anatomic divisions to guide safe exposure and avoid injury to critical nerves and vessels. Knowledge of the anatomy and functional relationships within the neck triangles enables clinicians to perform accurate physical examinations, interpret imaging findings, and plan diagnostic or therapeutic interventions with greater precision.