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Unformatted text preview: cords * cords form 5 major branches * axillary * radial * musculocutaneous * median * ulner Brachial plexus * origin in the posterior triangle of the neck. * they enter the posterior triangle by emerging from between the interval between scalenus anterior and scalenus medius. * fromed from the ventral rami of C5, C6, C7, C8, and T1 * Along with the subclavian artery, the brachial plexus acquires a sheath, the axillary sheath. Dorsal Scapular Nerve Axillary Nerve: C5, C6 spinal cord * In the axilla on each side, the quadrangular space is bounded by: * superiorly: * and ventrally: subscapularis * and dorsally: teres minor * inferiorly: teres major * medially: long head of triceps * laterally: humerus * It transmits the: * axillary nerve * posterior circumflex humeral artery * posterior circumflex humeral vein * muscles innervated * teres minor * deltoid * origin * posterior division of the trunks of the brachial plexus Radial Nerve Radial Nerve: Cat...
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- Fall '10
- Anatomy, Subclavian artery, Brachial plexus, Axillary Nerve, posterior triangle