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Neurology > Reflexes and Cranial Nerves > Flashcards

Reflexes and Cranial Nerves Flashcards

1
Q

Biceps

A

C 5,6 “pick up sticks”, C5 nerve root

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2
Q

Triceps

A

C 7,8 “lay them straight”. C7 nerve root

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3
Q

Patella

A

L 3,4 “kick the door”. L4 nerve root

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4
Q

Achilles

A

S 1,2 “lay them straight”. S1 nerve root

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5
Q

Cremaster

A

L 1, 2 “testicles move”

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6
Q

Anal wink reflex

A

S 3,4 “winks galore”

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7
Q

What is the moro reflex?

A

“hang on for life” reflex-abduct or extend arms when startled, then draw together

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8
Q

What is the rooting reflex?

A

movement of head toward one side of cheek or mouth when stroked (nipple seeking)

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9
Q

sucking reflex?

A

sucking response when roof of mouth is touched

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10
Q

Palmar reflex?

A

curling of fingers when palm is stroked

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11
Q

Plantar reflex?

A

dorsiflexion of large toe and fanning of other toes with plantar stimulation. Babinski sign-presence of refelx in adult-may signify UMN lesion.

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12
Q

Galant reflex?

A

stroking along one side of spine while newborn is in ventral suspension (face down) causes lateral flexion of lower body toward stimulated site

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13
Q 
CN I
Nerve?
Function?
Type?
Mnemonic?
A

Olfactory
Smell
Sensory

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14
Q 
CN II
Nerve?
Function?
Type?
Mnemonic?
A

Optic
Sight
Sensory

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15
Q 
CN III
Nerve?
Function?
Type?
Mnemonic?
A

Oculomotor
Eye movement (SR, IR, MR, IO), pupillary constriction, accomodation, eyelid opening
Motor

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16
Q 
CN IV
Nerve?
Function?
Type?
Mnemonic?
A

Trochlear
Eye movement
Motor

17
Q 
CN V
Nerve?
Function?
Type?
Mnemonic?
A

Trigeminal
Mastication, facial sensation (ophthalmic, maxillary, mandibular divisions), somatosensation from anterior 2/3 tongue
Sensory and Motor

18
Q 
CN VI
Nerve?
Function?
Type?
Mnemonic?
A

Abducens
Eye movement
Motor

19
Q 
CN VII
Nerve?
Function?
Type?
Mnemonic?
A

Facial
Facial movement, taste from anterior 2/3 of tongue, lacrimation, salivation, eyelid closing, stapedius muscle in ear
Both

20
Q 
CN VIII
Nerve?
Function?
Type?
Mnemonic?
A

Vestibulocochlear
Hearing, balance
Sensory

21
Q 
CN IX
Nerve?
Function?
Type?
Mnemonic?
A

Taste and somatosensation from posterior 1/3 of tongue, swallowing, salivation, monitoring carotid body and sinus chemo- and baroreceptors, and stylopharyngeus

22
Q 
CN X
Nerve?
Function?
Type?
Mnemonic?
A

Vagus
Taste from epiglottic region, swallowing, soft palate elevation, midline uvula, talking, coughing, thoracoabdominal viscera
Both

23
Q 
CN XI
Nerve?
Function?
Type?
Mnemonic?
A

Accessory
Head turning, shoulder shrugging
Motor

24
Q 
CN XII
Nerve?
Function?
Type?
Mnemonic?
A

Hypoglossal
Tongue movement
Motor

25
Q

CN V motor lesion

A

Jaw deviates toward side of lesion due to unopposed force from the opposite pterygoid muscle

26
Q

CN X lesion

A

Uvula deviates away from side of lesion. Weak side collapses and uvula points away

27
Q

CN XI lesion

A

Weakness turning head to contralateral side of lesion (SCM). Shoulder droop on side of lesion (trapezius). The left SCM contracts to help turn the head to the right

28
Q

CN XII lesion (LMN)

A

Tongue deviates toward side of lesion (“lick your wounds”) due to weakened tongue muscles on the affected side.

29
Q

What passes through the cavernous sinus?

A

CN III, IV, V1 (ophthalmic), V2 (Maxillary), CN VI, and postganglionic sympathetic fibers en route to the orbit all pass through the cavernous sinus. Cavernous portion of internal carotid is also here

30
Q

What is cavernous sinus syndrome?

A

It is due to mass effect, fistula, thrombosis-ophthalmoplegia and decreased corneal and maxillary sensation with normal visual acuity. CN VI commonly affected.

31
Q

What is the canvernous sinus?

A

Collection of venous sinuses on either side of the pituitary

Neurology (7 decks)

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