Anatomia general > Sistema nervioso > Sistema nervioso periférico > Nervios espinales > Nervios Cervicales [C1-C8) > Ramos anteriores; Ramos ventrales > Plexo Braquial > Porción infraclavicular > Nervio axilar
The Axillary Nerve (n. axillaris; circumflex nerve) arises from the posterior cord of the brachial plexus, and its fibers are derived from the fifth and sixth cervical nerves.
t lies at first behind the axillary artery, and in front of the Subscapularis, and passes downward to the lower border of that muscle.
It then winds backward, in company with the posterior humeral circumflex artery, through a quadrilateral space bounded above by the Subscapularis, below by the Teres major, medially by the long head of the Triceps brachii, and laterally by the surgical neck of the humerus, and divides into an anterior and a posterior branch.
The trunk of the axillary nerve gives off an articular filament which enters the shoulder-joint below the Subscapularis.