plexuses (novak) Flashcards
4 major plexuses
cervical, brachial, lumbar, sacral
spinal nerves in the brachial plexus
C5-T1
major nerves of the brachial plexus
musculocutaneous, median, ulnar, axillary, radial
organization of the brachial plexus (Randy Travis Drinks Cold Beer)
roots, trunks, divisions, chords, branches
how many roots
5
how many trunks
3
how many divisions
6
how many chords
3
how many branches
5
organization of the trunks
upper, middle, lower
organization of the divisions
3 anterior, 3 posterior
orgainization of the chords
lateral, most, medial
roots of the brachial plexus
dorsal scapular, long thoracic
dorsal scapular innervation
C5
motor - levator scapulae, rhomboid maj, rhomboid min
long thoracic innervation
C5, 6, 7
motor - serratus anterior
trunks of the brachial plexus
suprascapular and subclavius
suprascapular innervation
C5, 6
motor - supraspinatus, infraspinatus
subclavius innervation
C5, 6
motor - subclavius
chords of the bp
lat pect, up subscap, mid subscap/thoracodorsal, lower subscap, med pect, med cutaneous of arm, med cutaneous of forearm
lat pect innervation
C 5, 6, 7
motor - pec major and minor
upper subscapular innervation
C5, 6
motor - subscapularis
middle subscapular innervation
C6, 7, 8
motor - lat dorssi
lower subscapular innervation
C5, 6
motor - teres major
med pectoral innervation
C8, T1
motor - pec major and minor
med cutaneous innervation of arm
T1
sensory - front and medial skin of arm
med cutaneous innervation of forearm
C8, T1
sensory - med skin of forearm
musculocutaneous innervation
C5-7
motor - ant muscle sof arm
sensory - skin on lat forearm
median nerve innervation
C6- T1
motor - ant muscles of forearm (except 1/2 flex digi profundus and carpi ulnaris) and a few hand muscles (thenar, lumbricals 1 and 2)
sensoory - thumb and digits 2, 3, and half 4)
ulnar nerve innervation
C7-T1
motor - 1/2 flex digitorum profundus and flex carpi ulnaris and most hand muscles
sensory - 1/2 of digit 4 and 5
axillary innervation
C5, 6
motor - deltoid and t minor
sensory - skin on side of the shoulder
radial nerve innervation
C5-T1
motor - post muscles of the arm and forearm
sensory - skin on post arm, forearm, and post digits 1, 2, 3, and half 4