The inferior belly of the omohyoid muscle subdivides the posterior triangle of the neck into which two named triangles?

• A Submandibular and carotid triangles
• B Suprahyoid and infrahyoid compartments
• C Muscular and carotid triangles
• D Occipital and supraclavicular triangles ✓

Explanation

The inferior belly of omohyoid crosses the posterior triangle and divides it into a larger occipital triangle above and a smaller supraclavicular (subclavian) triangle below. The submandibular, muscular and carotid triangles together form the anterior triangle, bounded by the midline, mandible and sternocleidomastoid. This subdivision matters surgically because the supraclavicular triangle contains the subclavian artery and the trunks of the brachial plexus.

Reference: Gray's Anatomy for Students, 4th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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