Which pair of structures passes through the quadrangular space of the axilla?

• A Radial nerve and profunda brachii artery
• B Axillary nerve and posterior circumflex humeral artery ✓
• C Suprascapular nerve and suprascapular artery
• D Long thoracic nerve and lateral thoracic artery

Explanation

The quadrangular space is bounded by subscapularis above, teres minor above, teres major below, long head of triceps medially and the surgical neck of the humerus laterally. It transmits the axillary nerve and the posterior circumflex humeral artery. Option A describes the triangular interval below teres major, and option C describes the suprascapular notch, which is what makes these distractors tempting.

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

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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