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Axillary Anatomy

Gross Anatomy of the Axillary Region

Axillary Artery Origin Lateral border of 1st rib as a continuation of the Subclavian
Axillary Artery Ending Ends at Inferior Teres Major border and turns into Brachial artery
Axillary Vein Branches off Basilic vein and continues into Subclavian vein
Brachial Plexus Superior Trunk C5-C6
Brachial Plexus Middle Trunk C7
Brachial Plexus Inferior Trunk C8-T1
Brachial Plexus Anterior Division Supplies Flexor Muscles (anterior UE)
Brachial Plexus Posterior Division Supplies Extensor Muscles (posterior UE)
Brachial Plexus Posterior Cord Posterior divisions of all 3 trunks
Brach. Plex. Lateral Cord Anterior divisions of superior and middle trunks
Brach. Plex. Medial Cord Anterior division of inferior trunk
Lateral Cord Side Branch Lateral Pectoral Nerve
Lateral Cord Terminal Branches Musculocutaneous Nerve and Lateral Root of Median Nerve
Medial Cord Side Branches Medial Pectoral Nerve, Medial Brachial Cutaneous Nerve, Medial Antebrachial Cutaneous Nerve
Medial Cord Terminal Branches Ulnar Nerve and Medial Root of Median Nerve
Posterior Cord Side Branches Upper Suprascapular Nerve, Thoracodorsal Nerve, Lower Subscapular Nerve
Posterior Cord Terminal Branches Axillary Nerve and Radial Nerve
Other Brachial Plexus Nerves (3) Long Thoracic Nerve, Suprascapular Nerve, and Nerve to Subclavius
Created by: frankfrank05