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Neurology 1 > Neurology - Clinical Neurophysiology > Flashcards

Neurology - Clinical Neurophysiology Flashcards

1
Q

the median nerve comprises which 2 cords

a.lateral and medial
b.lateral and posterior
c.medial and posterior

A

a.lateral and medial

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2
Q

which cord supplies sensory fibres to the thenar eminences , thumb, index and middle fingers

a.lateral
b.medial
c.posterior

A

a.lateral

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3
Q

whoch cord provides motor fibres to the median muscles of the forearm

a,lateral
b,medial

A

a.lateral

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4
Q

which fibres make up the medial cord

a.c6-c7
b.c7-c8
c.c8-t1
dt1-t2

A

c.c8-t1

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5
Q

which fibres make up the lateral cord

a.c6-c7
b.c7-c8
c.c8-t1
d. t1-t2

A

a.c6-c7

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6
Q

which cord gives sensory fibres to the lateral 1/3 of the ring finger

a.lateral
b.medial
c.posterior

A

b.medial

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7
Q

which cord gives motor fibres to median muscles of distal forearm and hand

a. lateral
b.medial
c.psoterior

A

b.medial

mostly motor

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8
Q

patient with diabetes mellitus and pins and needles in median nerve distribution worse on wakening and waking them from sleep what does this indicate

a.carpal tunnel syndrome
b.anterior interosseus neuropathy
c.unlar nerve lesion
d.wrist drop
e.c8-t1 cervical radiculopathy

A

a.carpal tunnel syndrome

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9
Q

which endocrine condition can present with complaints of pins and needles in the hands

a.cushings
b.addisons
c.conns
d.graves
e.hashimotos
f.acromegaly

A

f.acromegaly

or hypothyroidism

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10
Q

why is the palm spared sometimes in carpal tunnel syndrome

A

palmar cutaneous branches before carpal tunnel

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11
Q

an increase in time taken for the signal to reach the electrodes in a nerve conduction study indicates what

a. damage to the myelin
b.axonal loss

A

a. damage to the myelin

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12
Q

an decrease in amplitude in a nerve conduction study indicates what

a. damage to the myelin
b.axonal loss

A

b.axonal loss

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13
Q

which hand is more commonly affected in carpal tunnel syndrome

A

dominant

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14
Q

which test is more sensitive

a.tinnels
b.phalens

A

b.phalens

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15
Q

what muscle should be assessed if there is thenar wasting and weakness of thumb abduction and opposition

a.flexor carpi ulnaris
b.flexor policis longus
c.brachioradialis

A

b.flexor policis longus

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16
Q

differentials for carpal tunnel syndrome

A

c6-c7 root lesion
brachial plexus lesion
proximal median nerve lesion
PN , MND

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17
Q

reduced reflexes and reduced power in combination with reduced sensation in the palm and forearm indicates what\

a.proximal median nerve lesion
b.anterior interosseus neuropathy
c.brachial plexus lesion
d.wrist drop
e.c6-c7 nerve lesion

A

e.c6-c7 nerve lesion

18
Q

which nerve supplies motor fibres to flexor pollicis longus , flexor digitorum profundus and pronator quadratus

a.median
b.anterior interosseus
c.posterior interosseus
d.ulnar

A

b.anterior interosseus

19
Q

inability to light a lighter, take a photo on a camera and hold a cup but NO sensory symtpoms is indicative of damage of which nerve

a.median
b.anterior interosseus
c.posterior interosseus
d.ulnar

A

b.anterior interosseus

20
Q

fracture of what can lead to anterior interosseus neuropathy

a.radial groove of humerus
b.mid shaft of radius
c.mid shaft of ulna
d.olecranon

A

b.mid shaft of radius

21
Q

what nerve roots is the ulnar nerve derived from

a.c6-c7
b.c7-c8
c.c8-t1
d. t1-t2

A

c.c8-t1

22
Q

the ulnar nerve travels under the tendinous arch of 2 heads of which muscle

a.flexor policis longus
b.flexor carpi ulnaris
c.abductor policis brevis
d. brachioradialis

A

b.flexor carpi ulnaris

23
Q

which branches leave the ulnar nerve before the cubital tunnel at elbow

A

dorsal cutaneous
palmar cutaneous

23
Q

which branches leave the ulnar nerve before the cubital tunnel at elbow

A

dorsal cutaneous
palmar cutaneous

24
Q

in ulnar neuropathy which symptoms dominate

a.sensory
b.motor

A

b.motor

25
Q

wartenbergs signs seen in ulnar neuropathy

A

little finger gets caught when hand put into pocket

abducted 5th finger due to weakness of 3rd palmar interosseus muscle

26
Q

benediction posture

A

ring and little fingers clawed
thumb slightly abducted

27
Q

if sensory symptoms in ulnar neuropathy are limited to the MCP the nerve compression is most liekly to be found at which location

a.wrist
b.elbow
c.lower brachial plexus

A

a.wrist

28
Q

if sensory symptoms in ulnar neuropathy are limited to the MCP and palmar only the nerve compression is most liekly to be found at which location

a.wrist
b.elbow
c.lower brachial plexus

A

b.elbow

below point of dorsal cutaneous branching and above the palmar branch

dorsal cutaneous - this branch still supplies back of hand so that is normal

29
Q

if sensory symptoms in ulnar neuropathy extend to the mcp, palmar and dorsal ulnar nerve distributions the nerve compression is most liekly to be found at which location

a.wrist
b.elbow
c.lower brachial plexus

A

c.lower brachial plexus

30
Q

sensory disturbance in the forearm and weakness involving abductor policis brevis indicates what

a.proximal median nerve lesion
b.anterior interosseus neuropathy
c.brachial plexus lesion
d.wrist drop
e.c8-t1 radiculopathy

A

e.c8-t1 radiculopathy

31
Q

patient only has weakness, wasting and fasciculation in limbs no sensory symptoms

A

ALS

32
Q

in which condition is there bilateral wasting especially in lower limbs and is associated with a PMH of diabetes mellitus

a. peripehral neuropathy
b.anterior interosseus neuropathy
c.brachial plexus lesion
d.wrist drop
e.c8-t1 radiculopathy

A

a. peripehral neuropathy

33
Q

where is the radiculopathy found in wrist drop

a.c6-c7
b.c7-c8
c.c8-t1

A

b.c7-c8

34
Q

wrist drop without sensory disturbance indicates a damage where

a.axillary nerve
b.posterior interosseus nerve
c.superficial radial

A

b.posterior interosseus nerve

35
Q

what muscle should be checked next in wirst drop (posterior interosseus nerve) with sensory disturbance (superficial radial nerve )

a.fcp
b.apb
c.fcu
d.brachioradialis

A

d.brachioradialis

36
Q

which nerve supplies sensory to the arm

a.ulnar nerve
b.radial nerve
c.anterior interosseus
d.axillary nerve
e.superficial radial

A

e.superficial radial

37
Q

wrist drop, weak suppination is indicative of what

a. peripehral neuropathy
b.anterior interosseus neuropathy
c.brachial plexus lesion
d.’saturday night palsy’
e.c8-t1 radiculopathy

A

d.’saturday night palsy’

38
Q

fracture of which bone can cause wrist drop

a.ulnar
b.radius
c.humerus

A

c.humerus

39
Q

in a brachial plexus lesion which other muscles should be weak excluding hand muscles

a.deltoid and latisimus dorsi
b.deltoid and pec minor
c.supraspinatous and trapezius

A

a.deltoid and latisimus dorsi

Neurology 1 (44 decks)

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