Editing Upper limb (section)

=== '''Musculocutaneous''' ===

** Origin
*** C5/C6/C7 - anterior       divisions of superior and middle trunks form the lateral cord, then       musculocutaneous nerve
** Course
*** Pierces coracobrachialis       and passes down anterior compartment of arm beneath biceps muscle
*** Then becomes lateral       cutaneous nerve of forearm
** Supplies
*** Sensory - lateral forearm
*** Motor - anterior       compartment of arm - BBC (biceps brachii, brachialis, coracobrachialis)
** Injuries
*** Rare - protected by bulk of       biceps muscle. Sometimes stab wounds to upper arm.
*** Sensory loss to lateral       forearm
*** Weak elbow flexion, forearm       supination, absent biceps reflex
** Deformity
*** Wasting of biceps