Blood vessels in the posterior triangle of the neck

(1) Middle scalene muscle, (2) anterior scalene muscle, (3) dorsal scapular nerve, (4) transverse cervical artery, (5) phrenic nerve, (6) brachial plexus, (7) dorsal scapular artery, (8) suprascapular artery, (9) thyrocervical artery, (10) lung, (11) inferior cervical sympathetic ganglion, (12) longus colli muscle, (13) vertebral artery, (14) vagus, (15) inferior thyroid artery, (16) middle cervical sympathetic ganglion, (17) recurrent laryngeal nerve.

IJV: internal jugular vein; CA: carotid artery; SA: subclavian artery; SV: subclavian vein.

Republished with permission of Medknow, from Boezaart AP, Ihnatsenka B. Applied sonoanatomy of the posterior triangle of the neck. Int J Shoulder Surg 2010; 4:63; permission conveyed through Copyright Clearance Center, Inc. Copyright © 2010.

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Blood vessels in the posterior triangle of the neck