Editing Axilla (section)

=== '''Nerves:''' ===

** Cords of the brachial plexus
*** Lateral
**** Lateral pectoral nerve
***** C5, C6
***** Crosses over axillary         artery and vein around medial border of pec major, then pierces the         clavipectoral fascia to supply pec major
***** Lies medial to the medial         pectoral nerve
**** Musculocutaneous nerve
**** Lateral root of the median        nerve
*** Medial
**** Medial pectoral nerve
***** C8, T1
***** Innervates both         pectoralis major and minor
***** Passes behind the         axillary artery, and emerges between the artery and vein
***** Lies within a         neurovascular bundle that wraps around the lateral border of the         pectoralis minor muscle (note that axillary vein is found just         cephalad and deep to the bundle)
**** Medial root of median        nerve
**** Medial cutaneous nerve of        the arm
**** Medial cutaneous nerve of        the forearm
**** Ulnar nerve
*** Posterior
**** Upper subscapular nerve
**** Thoracodorsal nerve (nerve        to latissimus dorsi)
***** C6/7/8
***** Large nerve - passes         behind the axillary artery and vein, then runs down posterior axillary         wall, crosses lower border of teres major, enters the deep surface of         latissimus dorsi
***** To identify: identify a         pair of subscapular veins on subscapularis. The more superficial one         is divided, revealing the deep subscapular vein and the adjacent         subscapular artery. The nerve is posterior to the axillary vein and         medial to the deep subscapular vein.
***** In danger in operations         in lower axilla
***** Injury leads to         difficulty climbing
**** Lower subscapular nerve
**** Axillary nerve
**** Radial nerve