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Gross Anatomy 2 > Final Exam: Special Somatic Afferent > Flashcards

Final Exam: Special Somatic Afferent Flashcards

1
Q

What are some categories of neurons:

A
  1. GVA
  2. GSA
  3. GVE
  4. GSE
  5. SVA
  6. SSA
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2
Q

Neurons that transmit the sensation of smell and tase are designates as ______

A

Special visceral afferent (SVA)

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3
Q

Which CN transmits olfactory impusles?

A

CN1

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4
Q

Which CNs transmit taste impulses?

A

7, 9, 10

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5
Q

Neurons that supply motor innervation to m. of pharyngeal arch origin are designated as _____

A

Special visceral efferent (SVE)

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6
Q

Which CNs contain SVE fibers?

A

5, 7, 9, 10, 11

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7
Q

Neurons that transmit the special senses of vision hearing, and balance are designated as _____

A

Special somatic afferent (SSA)

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8
Q

Which CNs contain SSA fibers?

A

2 and 8

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9
Q

What are the 6 steps of the auditory pathway?

A
  1. cochlear hair cells of CN 8
  2. Cochlear nuclei
  3. caudal colliculus
  4. Thalamus
  5. auditory cortex
  6. primary auditory pathway
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10
Q

Fast motor response elicited by sudden onset of tactile, vestibular, or acoustic stimulus that exceeds certain intensity threshold?

A

Startle reflex

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11
Q

What is CN 8?

A

vestibulochochlear n.

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12
Q

Startle reflex cause flexion/extension of skeletal m.?

A

flexion

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13
Q

What 3 things does startle reflex facilitate?

A
  1. Overriding of conscious bbehavioral patterns
  2. portection from physical impact
  3. fight/flight response
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14
Q

What are the 2 types of hearing loss refering to time?

A
  1. acute (rapid onses)

2. Chronic (persistent)

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15
Q

What are the 2 types of hearing loss refering to damage?

A
  1. conductive

2. sensorineural

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16
Q

deafness as a result of damage to structures of the inner ear preventing stimulation of electrical impusles

A

Sensorineural

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17
Q

deafness as a result of damage to structures of the external and or middle are preventing the conduction of sound waves to the inner ear

A

conductive

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18
Q

how can you test sensoriniural deafness?

A

BAER test

19
Q

Genetic deafness can be linked to the ____ gene that results in white coat color and or spotted coat

A

Piebald

20
Q

organ within the head that senses balance and acceleration, distinct from general proprioceptors that are located within m. tendons and joints

A

Vestibular system

21
Q

Where are cell bodies of SSA neurons located?

A

vestibular ganglia

22
Q

Where are the axons of SSA neurons located?

A

vestibular nuclei of the hindbrain

23
Q

Reflex that allows eyes to remain fixed on a given focal point while the head is moving in any direction

A

vestibulo-ocular reflex

24
Q

normal movement of the eyes in response to head movement

A

physiologic nystagms

25
Q

T/F during nystagmus, the fast phase goes away from lesion?

A

T

26
Q

What are the 3 directions of nystagmus?

A

horizontal, vertical, rotary

27
Q

reflex that produces neck movements and forelimb extension that counteracts the tilt of the head

A

vestibulo-collic reflex

28
Q

T/F the head will tilt away from the lesion

A

F, tilts towards

29
Q

Vestibulospinal tracts stimulate extensor mm ipsilaterally/contralaterally?

A

ipsilaterally

30
Q

Vestibulospinal tract inhibits extensor mm. ipsilaterally/contralaterally

A

contralaterally

31
Q

Excessive stimulation of the vestibular apparatus causes:

A

nausea and loss of appetite

32
Q

Receives light from peripheral visual fields and axons cross over at the optic chiasm

A

nasal retinae

33
Q

Receives light from binocular visual fields and axons do not cross at the optic chiasm

A

Temporal retinae

34
Q

What is seen by one eye

A

monocular

35
Q

what is seen by both eyes

A

binocular

36
Q

field of vision for the right eye

A

right visual field

37
Q

field of vision for the left eye

A

left visual field

38
Q

When the optic tract reaches the thalamus, two courses can be followed:

A
  1. pathway for conscious perception

2. pathway to midbrain for unconscious reflex pathway

39
Q

what are the two pathways of the unconscious reflex pathway

A
  1. retinopretectal pathway

2. retinotectal pathway

40
Q

What are the two pathways of the retinotectal pathway?

A
  1. tectobulbar pathway

2. tectospinal pathway

41
Q

which unconscious reflex pathway is for pupillary constriction?

A

retinotectal pathway

42
Q

which unconscious pathway is for somatic reflex

A

retinotectal pathway

43
Q

What are the 3 non cortical pathways?

A
  1. retinopretectal
  2. retinotectal
  3. retinohypothalamic
44
Q

What pathway is cortical

A

retinogeniculostriate

Gross Anatomy 2 (27 decks)

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