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Flashcards in Neuro Deck (94)
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1

Lesion to CN iiii

Diplopia when looks down and away from affected side

2

Usual causes of CN vi lesions

Trauma , wernikes encephalopathy

3

Features of CN vi lesions

Failure of lateral movement

4

LMN lesion of facial
Usual cause

Ipsilateral weakness of muscles of facial expression
Bell's palsy

5

UMN of facial
Usual cause

Insulate real weakness of muscles of facial expression but SPARES FOREHEAD
Tumours / vascular events

6

Facial nerve involvement in hearing?
Damage ->

Motor supply to stapedius
Hyperacusis (loud distortion of sounds)

7

Hip flexion nerve

L1,2

8

Knee flexion / hip extension nerve

L5 s1,2

9

Knee extension nerve

L2,3,4

10

Knee jerk nerve

L3,4

11

Ankle jerk nerve

S1,2

12

Plantar reflex nerve

L5 s1,2

13

Dermatomes of legs

Upper thigh l2
Anterior knee l3
Inner calf l4
Outer calf l5
Lateral foot s1

14

Heel to toe walking tests for

Midline cerebellar lesion

15

Difficulty walking on toes

S1 lesion

16

Difficulty walking on heels ? (Foot drop )

L4/5 lesion

17

Parkinson's gait

Hesitation in starting
Shuffling
Freezing
Diminished swinging of arms
Propulsion

18

Cerebellar ataxia gait

Broad based
Unstable
Tremulous

19

Sensory ataxia gait

Broad based and high stepping

20

Distal vs proximal weakness gait

Distal - affected leg raised high and foot slaps ground
Proximal - waddling

21

Never supply:
Deltoid
Pec major / lats
Biceps
Triceps
Wrist flexion
Wrist extension
Finger flexion
Finger extension.
Dorsal interrossi (splay fingers)
Palmar interrossi

Deltoid c5,6
Pec major / lats c6,7,8
Biceps c5,6
Triceps c7
Wrist flexion c6,7,8
Wrist extension
Finger flexion
Finger extension.
Dorsal interrossi (splay fingers)
Palmar interrossi

22

Lesion of CN III

Eye pointing down and out with a fixed dilated pupil
Pstosis

23

Never supply:
Deltoid
Pec major / lats
Biceps
Triceps
Wrist flexion
Wrist extension
Finger flexion
Finger extension.
Dorsal interrossi (splay fingers)
Palmar interrossi


Deltoid c5,6
Pec major / lats c6,7,8
Biceps c5,6
Triceps c7
Wrist flexion c 6,7,8
Wrist extension c7,8
Finger flexion c7,8
Finger extension. C7,8
Dorsal interrossi (splay fingers) c8,t1
Palmar interrossi c8, t1

24

Nerves for
Biceps reflex
Triceps
Supinator

Biceps c5,6
Triceps c7,8
Supinator c5,6

25

Dermatomes of arm

Lateral upper arm - c5
Lateral forearm and thumb - c6
Middle finger - c7
Little finger - c8
Medial upper arm - t1

26

Cerebellar signs

DANISH
Disdiadokinesis
Ataxia
Nystagmus
Intension tremor
Slurred speech
Hypotonia

27

Cerebellar function tests

Heel to shin
Finger to nose
Finger to nose to finger
Rapid alternating movements

28

Basic causes of cranial nerve lesions

Trauma, diabetes, tumours, MS

29

Used for visual acuity

Snellen chart

30

Why are muscles of forehead sometimes spared from UMN lesions

They have bilateral UMN supply