Blumenfeld Neuroanatomy 09: Major Plexuses And Peripheral Nerves

Front 1

thumb abduction in plane of palm is done by ___, innervated by ___ n.

Back 1

abductor pollicis longus
radial

Front 2

thumb adduction is done by ___, innervated by ___

Back 2

adductor pollicis
ulnar n.

Front 3

thumb abduction perpendicular to palm is done by ___, innervated by ___

Back 3

abductor pollicis brevis
median n.

Front 4

main flexor at MCP is ___, innervated by ___

Back 4

lumbricals
ulnar (medial 2 fingers)
median (lateral 2 fingers)

Front 5

main flexor at PIP is ___, innervated by ___

Back 5

flexor digitorum superficialis
median

Front 6

main flexor at DIP is ___, innervated by ___

Back 6

flexor digitorum profundus
ulnar (medial 2 fingers)
median (lateral 2 fingers)

Front 7

main extensors at MCP are ___ (2), innervated by ___

Back 7

extensor digitorum
lumbricals
ED: radial
lumbricals: ulnar/median

Front 8

main extensor at PIP is ___, innervated by ___

Back 8

lumbricals
ulnar/median

Front 9

main extensor at DIP is ___, innervated by ___

Back 9

extensor digitorum
radial

Front 10

4 intrinsic hand muscles not innervated by ulnar

Back 10

lumbricals 1+2
opponens pollicis
apb
flexor pollicis brevis

Front 11

flexor digitorum profundus is best tested at ___

Back 11

DIP

Front 12

extensor digitorum is best tested at ___

Back 12

MCP

Front 13

___ n does foot inversion

Back 13

tibial

Front 14

___ n does foot eversion

Back 14

superficial peroneal

Front 15

___ n does plantarflexion

Back 15

tibial

Front 16

___ n does dorsiflexion

Back 16

deep peroneal

Front 17

sensory deficit associated with tibial n.

Back 17

sole of foot

Front 18

sensory deficit associated with deep peroneal n.

Back 18

between 1st 2 toes

Front 19

injury to lower trunk of brachial plexus causes ___

Back 19

klumpke’s palsy

Front 20

2 causes of Klumpke’s palsy

Back 20

thoracic outlet syndrome
pancoast tumor

Front 21

best muscle to test in suspected carpal tunnel

Back 21

apb

Front 22

NCS technique for MG is ___
finding is ___ because ___

Back 22

slow repetitive stimulation (2-3 Hz)
decrement in CMAP
presynaptic ACh is depleted

Front 23

NCS technique for Lambert-Eaton is ___
finding is ___ because ___

Back 23

fast repetitive stimulation (>5 Hz)
increment in CMAP
ACh release is facilitated

Front 24

EMG distinguishes ___ from ___

Back 24

neuropathy
myopathty

Front 25

EMG finding in neuropathy

Back 25

increased spontaneous activity

Front 26

EMG during muscle contraction demonstrates ___

Back 26

recruitment pattern

Front 27

recruitment pattern for myopathy shows ___

Back 27

reduced amplitude

Front 28

recruitment pattern in neuropathy shows ___

Back 28

normal amplitude with interrupted firing