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Neuroscience 1B > Reflexes > Flashcards

Reflexes Flashcards

1
Q

Involuntary, nearly instantaneous movement to a stimulus

A

Reflex

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2
Q

Acts on an impulse before that impulse reaches the brain

A

Reflex arc

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3
Q

Key terms for reflex

A

Instantaneous

Involuntary

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4
Q

Cranial nerves involved in pupillary light reflex
Sensory:
Motor:

A

Sensory: CN II
Motor: CN III

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5
Q

CNs for visual threat response
Sensory:
Motor:

A

Sensory: CN II
Motor: CN VII

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6
Q

CNs involved in accomodation reflex
Sensory:
Motor:

A

Sensory: CN II
Motor: CN III

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7
Q

CNs for corneal blink reflex
Sensory:
Motor:

A

Sensory: CN V
Motor: CN VII (CN III)

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8
Q

CNs for gag reflex
Sensory:
Motor:

A

Sensory: CN IX
Motor: CN X

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9
Q

CNs for glabellar reflex
Sensory:
Motor:

A

Sensory: CN V
Motor: CN VII

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10
Q

CNs for vestibulo-ocular reflex
Sensory:
Motor:

A

Sensory: CN VIII
Motor: CN III, IV, VI

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11
Q

Spastic paralysis (UMN/LMN)

A

UMN

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12
Q

Fasciculations: PRESENT (UMN/LMN)

A

LMN

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13
Q

Hyper-reflexive (UMN/LMN)

A

UMN

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14
Q

POSITIVE babinski sign (UMN/LMN)

A

UMN

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15
Q

Flaccid paralysis (UMN/LMN)

A

LMN

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16
Q

Disuse atrophy (UMN/LMN)

A

UMN

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17
Q

Area of body involved: small (UMN/LMN)

A

LMN

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18
Q

Hypotonic (decreased DTR) (UMN/LMN)

A

LMN

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19
Q

Motor component of muscle reflex (UMN/LMN)

A

LMN

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20
Q

Contains the large pyramidal cells of Getz

A

Left cerebral motor cortex

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21
Q

Left cerebral motor cortex gives rise to what tract?

A

Corticospinal tract

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22
Q

Ankle jerk
Dermatome:
Muscle:

A

S1

Gastrocnemius

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23
Q

Triceps reflex
Dermatome:
Muscle:

A

C7, C8

Triceps muscle

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24
Q

Knee jerk
Dermatome:
Muscle:

A

L2-L4

Quadriceps

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25
Q

Abdominal reflexes

Dermatomes above the umbilicus

A

T8, T9, T10

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26
Q

Abdominal reflexes:

Dermatomes below the umbilicus

A

T10, T11, T12

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27
Q

Normal response to brisk stroke to the abdomen (abdominal reflex)

A

Deviation of umbilicus to the side of stimulus

28
Q

Stroking the superior, medial part of the thigh

A

Cremasteric reflex

29
Q

Normal response to anal wink reflex

A

Contraction of the external anal sphincter

30
Q

Dermatome for anal wink reflex

A

S4-S5 (S3-S4)

31
Q

Normal response for cremasteric reflex

A

Ipsilateral pulling up of the testis by the cremaster muscle

32
Q

Scratching of the abdominal wall below the costal margin and iliac fossa

A

Abdominal reflex

33
Q

Dermatome for cremasteric reflex

A

L1-L2

34
Q

Normal response for triceps reflex

A

EXTENSION of the triceps muscle

35
Q

Dermatome for triceps reflex

A

C7-C8

36
Q

Biceps reflex normal repsonse

A

Elbow FLEXION

37
Q

Muscle involved in biceps muscle

A

Biceps brachii

38
Q

Supinator/ brachioradialis reflex normal response

A

Slight elbow SUPINATION and FLEXION

39
Q

Dermatome for supinator reflex

A

C5-C6

40
Q

Knee jerk reflex normal response

A

Knee EXTENSION

41
Q

Muscle involved in knee jerk

A

quadriceps

42
Q

Ankle reflex normal response

A

PLANTARFLEXION

43
Q

Dermatome for knee jerk

A

L2-L4

44
Q

Muscle involved in ankle jerk

A

Gastrocnemius

45
Q

Dermatome for ankle jerk

A

S1

46
Q

Reinforcement technique used to elicit response for knee jerk

A

Jendrassik manuever

47
Q

Grading for normal contraction of the muscle

A

2+ / ++

48
Q

Grading for hyperactive with clonus

A

4+ / ++++

49
Q

It is a series of involuntary, rhythmic muscular contractions and relaxations of the muscle

A

Clonus

50
Q

Abnormal reflexes indicates a loss of?

A

Loss of cortical inhibition

51
Q

Abnormal reflexes are a result of lesion in?

A

UMN

52
Q

The most important and reliable pathological reflex

A

Babinski sign

53
Q

It is the upper limb counterpart of the babinski sign

A

Hoffman’s sign

54
Q

Positive babinski sign

A

Fanning out of toes

EXTENSION of the great toe

55
Q

Maneuvers for babinski sign

A

Chaddock
Oppenheim
Gordon

56
Q

Negative babinski sign

A

FLEXION of the great toe

57
Q

Babinski manuever:
Done on the anterior tibia
From just below the patella, it is firmly stroked with a knuckle

A

Oppenheim

58
Q

Babinski manuever:
Lateral foot
From lateral malleolus to the small toe

A

Chaddock

59
Q

Babinski manuever:

Calf muscles are squeezed firmly

A

Gordon

60
Q

(+) response: flexion of the index finger to the thumb of the same hand

A

Hoffman’s sign

61
Q

Present if stroking the lateral upper lip causes movement of the mouth toward the stimulus

A

Rooting reflex

62
Q

Tapping of a tongue blade across the lips causes pursing of the lips

A

Snout reflex

63
Q

Stroking of the palm of patient’s hand causes it to grasp and fingers to flex

A

Grasp reflex

64
Q

Stroking of the palm of the hand causes contraction of ipsilateral mentalis muscle of the lower lip

A

Palmomental reflex

65
Q

Person instinctively sucks everything that touches the roof of the mouth

A

Sucking reflex

Neuroscience 1B (12 decks)

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