Which muscle divides the posterior triangle of the neck into an occipital triangle above and a supraclavicular triangle below?

• A Inferior belly of omohyoid ✓
• B Sternohyoid
• C Posterior belly of digastric
• D Scalenus anterior

Explanation

The inferior belly of omohyoid crosses the posterior triangle, passing from the scapula towards its intermediate tendon deep to sternocleidomastoid, and subdivides the triangle into the occipital triangle above and the supraclavicular triangle below. The posterior belly of digastric divides the anterior triangle, scalenus anterior defines the interscalene interval, and sternohyoid belongs to the infrahyoid strap group. The supraclavicular triangle contains the third part of the subclavian artery and the trunks of the brachial plexus.

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

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.