AXILLARY NERVE

  

ORIGIN: Posterior cord of brachial plexus

COURSE/DISTRIBUTION: Begins from the posterior cord of brachial plexus and runs forward, accompanied by posterior circumflex humeral artery to the quadrangular space- a muscular space between the long head of triceps brachii and the surgical neck of humerus. It divides into two terminal branches anterior and posterior branches. The posterior becomes the upper lateral cutaneous nerve of arm.

BRANCHES.

bulletMuscular branches to the deltoid and teres minor
bulletAnterior branch
bulletPosterior branch which becomes the upper lateral cutaneous nerve of arm

ROOT VALUE: C5,6

 

 

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Electronic School of Medicine
Creator: Oluwole Ogunranti

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Layers 1- skin; 2- fasciae, 3- muscles 1, 4 -muscles II 5- deep, 6- deeper, 7- deepest, 8- innermost, 9- joints, 10- bones.  


 

 

 

 

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Creator: Oluwole Ogunranti