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NeuroAnatomy > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

Nuclei of the Trigeminal Nerve

A
  1. motor trigeminal nuclei
  2. principle sensory trigeminal nuclei
  3. mesencephalic trigeminal nuceli
  4. spinal trigeminal nuclei
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2
Q

motor tigeminal nuclei function

A

give rise to efferent to muscles of mastication

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3
Q

principle sensory trigeminal nuclei function

A

afferent discriminate touch, light touch, proprioception to face, dental pressure

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4
Q

mesencephalic trigeminal nuclei function

A

afferent proprioception to jaw

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5
Q

spinal trigeminal nuclei function

A

afferent crude touch, pain, temperature of face.

-somatotopic!

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6
Q

what are the 5 major branches off of the facial nerve CN7

A
  1. temporal branch
  2. zygomatic branch
  3. buccal branch
  4. marginal mandibular branch
  5. cervical branch
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7
Q

what muscles are innervated by oculomotor n

A

superior, inferior, medial rectus, inferior oblique

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8
Q

what muscles are innervated by trochlear n

A

superior oblique

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9
Q

what muscles are innervated by abducens n

A

lateral rectus

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10
Q

what action happens in the eye with muscle medial rectus

A

adduction

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11
Q

what action happens in the eye with muscle superior rectus

A

elevation and intorsion

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12
Q

what action happens in the eye with muscle inferior rectus

A

depression and extortion

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13
Q

what action happens in the eye with muscle inferior oblique

A

extorsion and elevation

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14
Q

what action happens in the eye with muscle superior oblique

A

intorsion and depression

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15
Q

what action happens in the eye with muscle lateral rectus

A

abduction

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16
Q

ventral posterior lateral nucleus (VPL)

info being relayed

A

Somatosensory (spinal cord)

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17
Q

ventral posterior lateral nucleus

where does it send its info

A

primary sensory cortex

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18
Q

ventral posteromedial nucleus

info being relayed

A

somatosensory (CNs)

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19
Q

ventral posteromedial nucleus

where does it send to

A

primary sensory cortex

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20
Q

lateral geniculate nucleus

info being relayed

A

vision

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21
Q

lateral geniculate nucleus

where does it send to

A

primary visual cortex

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22
Q

medial geniculate nucleus

info being relayed

A

auditory

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23
Q

medial geniculate nucleus

where does it send to

A

primary auditory cortex

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24
Q

ventral lateral nucleus

info being relayed

A

cerebellum and basil ganglia

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25
Q

ventral lateral nucleus

where does it send to

A

primary motor cortex, premotor and supplementary motor cortex

26
Q

ventral anterior nucleus

info being relayed

A

cerebellum and basal ganglia

27
Q

ventral anterior nucleus

where does it send to

A

primary motor cortex, premotor and supplementary motor cortex, frontal lobe

28
Q

mediodorsal nucleus

info being relayed

A

limbic, basal ganglia

29
Q

mediodorsal nucleus

where does it send to

A

frontal cortex

30
Q

anterior nucleus

info being relayed

A

maxillary body and hippocampus

31
Q

anterior nucleus

where does it send to

A

cingulate gyrus

32
Q

what are the cutaneous mechanoreceptors

A
  1. free nerve endings
  2. messier corpusles
  3. merkel cells
  4. ruffini endings
  5. pacinian corpuscles
33
Q

free nerve endings

A

temperature, pain , crude touch

-small or large receptor fields

34
Q

meissner corpusles

A

light tough

-small receptor fields

35
Q

merkel cells

A

light touch

-small receptor fields

36
Q

ruffini endings

A

vibration, pressure, stretching of skin (helps provide secondary info)

-large receptor fields

37
Q

pacinian corpuscles

A

vibration, pressure

-large receptor fields

38
Q

by what structures does the body detect proprioceptive changes?

A
  1. muscle spindles
  2. golgi tendon organs
  3. joint receptors
39
Q

how do muscle spindles detect proprioceptive changes?

A
  • Run parallel to muscle belly
  • Intrafusal fibers
  • detect rate and degree of stretch
40
Q

how do golgi tendon organs detect proprioceptive changes?

A
  • Near muscle-tendon junction

- Monitors tension within tendons

41
Q

how do joint receptors detect proprioceptive changes?

A

Monitors stretch in synovial joints and sends info to cerebellum and spinal reflex arcs

42
Q

pacinian joint receptors detect…

A

AROM

43
Q

ruffini joint receptors detect….

A

indicate end range and PROM

44
Q

free nerve endings in joint receptors detect…

A

pain from joint inflammation

45
Q

what nuclei are in the lateral nuclear group

A
  1. ventral posterior lateral nucleus
  2. ventral posteromedial nucleus
  3. lateral geniculate nucleus
  4. medial geniculate nucleus
  5. ventral lateral nucleus
  6. ventral anterior nucleus
46
Q

which nuclei are in the medial nuclear group

A

mediodorsal nucleus (MD)

47
Q

which nuclei are in the anterior nuclear group

A

anterior nucleus

48
Q

what information does the dorsal spinocerebellar tract relay

A

afferent info regarding LE limb movements

  • subconscious perception from intrafusal and joint receptors
49
Q

what information does the cuneocerebellar tract relay

A

afferent info regarding UE/neck limb movements

  • subconscious perception from intrafusal and joint receptors
50
Q

what information does the ventral spinocerebellar tract relay

A

info regarding activity of LE spinal cord interneurons from intrafusal fibers and GTOs

51
Q

what information does the rostral spinocerebellar tract relay

A

info regarding activity of UE/neck spinal cord interneurons from intrafusal fibers and GTOs

52
Q

what are the cerebellar input pathways

A
  1. dorsal spinocerebellar tract
  2. cuneocerebellar tract
  3. ventral spinocerebellar tract
  4. rostral spinocerebellar tract
53
Q

what are sound waves

A

alternating high and low pressure regions in air that originate from vibrating object

54
Q

what is pitch

A

frequency of sound waves

55
Q

define loudness

A

intensity/amplitude of sound waves

56
Q

define tone

A

pitch + amplitude

57
Q

Lateral nucleus

output

A

output to cerebellum and to lateral vestibulospinal tract to facilitate extensors

(posture, muscles of trunk and legs)

58
Q

medial nucleus

output

A

provides descending output ot muscles of head and neck via MLF
(MLF, head position)

59
Q

superior nucleus

output

A

provides ascending output via MLF to oculomotor nuclei

60
Q

inferior nucleus

output

A

outputs to cerebellum to the reticular formation and to the oculomotor nuclei

NeuroAnatomy (6 decks)

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