ANAT 2647 Brachial Plexus - Brachial Plexus Axilla = arm...

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Brachial Plexus
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Axilla = arm pit region Arm (Brachium) = shoulder to elbow Forearm (Antebrachium) = elbow to wrist
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Roots Trunks Divisions Cords Branches
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Roots Anterior rami C5-T1 Some overlap with C4 of the cervical plexus Pass between the anterior and middle scalene muscles with the subclavian artery Dorsal Scapular Nerve Long Thoracic Nerve
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Dorsal scapular nerve Posterior C5 (C4) root Pierces middle scalene Innervates the rhomboids
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Long Thoracic Posterior C5, C6 (C7) Runs behind the C8 and T1 roots Innervates serratus anterior
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Trunks Superior C5, C6 Nerve to the subclavius Suprascapular nerve Middle C7 Inferior C8,T1
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Nerve to the subclavius C6 (C4, C5) Innervates the subclavius and the sternoclavicular joint May give an accessory branch to the phrenic nerve
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Suprascapular nerve C5 (C4, C6) Wraps around the posterior neck, passes through the scapular notch Supplies the supraspinatus, infraspinatus and glenohunmeral joint
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Divisions Anterior Posterior
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  • Winter '11
  • RonaldG.Mayne
  • Brachial plexus, Median nerve, Dorsal scapular nerve, Medial cutaneous nerve, Nerve to the subclavius

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ANAT 2647 Brachial Plexus - Brachial Plexus Axilla = arm...

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