A Lateral View of the Omohyoid Muscles of a Male

Description

Running obliquely across the anterolateral neck, the omohyoid is shown as a paired infrahyoid strap muscle with an inferior belly arising from the superior border of the scapula near the suprascapular notch and a superior belly inserting on the inferior border of the hyoid bone. A distinct intermediate tendon bridges the two bellies and lies deep to the sternocleidomastoid, where it is typically tethered by a fascial sling to the clavicle and the deep cervical fascia. Superiorly, the muscle approaches the hyoid just lateral to the midline, while its inferior belly tracks laterally and posteriorly toward the shoulder girdle. Clean anatomy. Clinically, this lateral perspective clarifies why the omohyoid is a dependable landmark when teaching the anterior triangle and the subdivision of the posterior triangle, where its inferior belly crosses the lower neck in proximity to the supraclavicular fossa. Surgeons encounter it during selective neck dissection and level III to IV lymph node clearance, and the intermediate tendon can be mistaken for a fibrous band unless its continuity with the strap musculature is appreciated. Its relationship to the carotid sheath matters, since the superior belly lies superficial to the internal jugular vein region and helps orient dissection around the ansa cervicalis and adjacent venous tributaries. Use this figure in gross anatomy labs and head and neck modules to reinforce infrahyoid muscle attachments, the concept of an intermediate tendon, and the way fascial compartments guide strap muscle paths. It also suits operative anatomy chapters discussing cervical lymph node levels, tracheostomy-adjacent exposure, and neck dissection landmarks in adult male patients. Anatomical accuracy verified by SciePro's Medical Advisory Board.