brachial plexus
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18 Terms
whats the order
roots, trunks, divisions, cords, branches
what are the roots
c5, c6, c7, c8, t1
trunks
upper, middle, lower
divisions
each trunk has a anterior compartment and posterior division
cords
medial, lateral, posterior
free
free
terminal branches (nerves)
axillay, musculocutaneous, radial, ulnar, median
free
free
roots c5 and c6 merge to form
upper trunk
all posterior divisions merge to form
posterior cord
anterior division of upper and middle trunk merge to form
lateral cord
median neve is formed via
lateral and medial cord
terminal branches that arise from the posterior cord are..
the axillary and radial nerves
axillary nerve
no compartment, innervates deltoid and teres minor
median nerve
most of anterior forearm compartment
musculocutaneouso nerve
anterior arm compartment - elbow flexors
radial nerve
posterior arm and forearm muscles (primary elbow extensors, primary hand, wrist and finger extensors)
ulnar nerve
some anterior forearm muscles