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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
ventral lateral nucleus | where does it send to
primary motor cortex, premotor and supplementary motor cortex
26
ventral anterior nucleus | info being relayed
cerebellum and basal ganglia
27
ventral anterior nucleus | where does it send to
primary motor cortex, premotor and supplementary motor cortex, frontal lobe
28
mediodorsal nucleus | info being relayed
limbic, basal ganglia
29
mediodorsal nucleus | where does it send to
frontal cortex
30
anterior nucleus | info being relayed
maxillary body and hippocampus
31
anterior nucleus | where does it send to
cingulate gyrus
32
what are the cutaneous mechanoreceptors
1. free nerve endings 2. messier corpusles 3. merkel cells 4. ruffini endings 5. pacinian corpuscles
33
free nerve endings
temperature, pain , crude touch -small or large receptor fields
34
meissner corpusles
light tough -small receptor fields
35
merkel cells
light touch -small receptor fields
36
ruffini endings
vibration, pressure, stretching of skin (helps provide secondary info) -large receptor fields
37
pacinian corpuscles
vibration, pressure -large receptor fields
38
by what structures does the body detect proprioceptive changes?
1. muscle spindles 2. golgi tendon organs 3. joint receptors
39
how do muscle spindles detect proprioceptive changes?
- Run parallel to muscle belly - Intrafusal fibers - detect rate and degree of stretch
40
how do golgi tendon organs detect proprioceptive changes?
- Near muscle-tendon junction | - Monitors tension within tendons
41
how do joint receptors detect proprioceptive changes?
Monitors stretch in synovial joints and sends info to cerebellum and spinal reflex arcs
42
pacinian joint receptors detect...
AROM
43
ruffini joint receptors detect....
indicate end range and PROM
44
free nerve endings in joint receptors detect...
pain from joint inflammation
45
what nuclei are in the lateral nuclear group
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
which nuclei are in the medial nuclear group
mediodorsal nucleus (MD)
47
which nuclei are in the anterior nuclear group
anterior nucleus
48
what information does the dorsal spinocerebellar tract relay
afferent info regarding LE limb movements * subconscious perception from intrafusal and joint receptors
49
what information does the cuneocerebellar tract relay
afferent info regarding UE/neck limb movements * subconscious perception from intrafusal and joint receptors
50
what information does the ventral spinocerebellar tract relay
info regarding activity of LE spinal cord interneurons from intrafusal fibers and GTOs
51
what information does the rostral spinocerebellar tract relay
info regarding activity of UE/neck spinal cord interneurons from intrafusal fibers and GTOs
52
what are the cerebellar input pathways
1. dorsal spinocerebellar tract 2. cuneocerebellar tract 3. ventral spinocerebellar tract 4. rostral spinocerebellar tract
53
what are sound waves
alternating high and low pressure regions in air that originate from vibrating object
54
what is pitch
frequency of sound waves
55
define loudness
intensity/amplitude of sound waves
56
define tone
pitch + amplitude
57
Lateral nucleus | output
output to cerebellum and to lateral vestibulospinal tract to facilitate extensors (posture, muscles of trunk and legs)
58
medial nucleus | output
provides descending output ot muscles of head and neck via MLF (MLF, head position)
59
superior nucleus | output
provides ascending output via MLF to oculomotor nuclei
60
inferior nucleus | output
outputs to cerebellum to the reticular formation and to the oculomotor nuclei

NeuroAnatomy (6 decks)

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