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CNS > Test 3 Practice Questions > Flashcards

Test 3 Practice Questions Flashcards

1
Q

Nerve fibers of solitary tract…

A

Serve as afferent limb of a variety of reflexes including those that modulate cardiac and respiratory fxn.

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2
Q

What nucleus receives all taste input?

A

NTS

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3
Q

Which is not a part of auditory pathway?

  • lateral lemniscus
  • superior olivary nucleus
  • Superior Colliculus
  • Transverse temporal gyrus
A

Superior Colliculus

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4
Q

What is the receptor organ for dynamic equilibrium?

A

Christa

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5
Q

The functional component of Parasympathetic neurons is…

A

GVE

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6
Q

What is the ascending pathway for the conscious awareness of pain originating from the eybrow?

A

Ophthalmic Nerve- trigem. ganglion- spinal trigem nucleus- primary sensory area

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7
Q

Ascending fibers of the medial longitudinal fasciculus end in the ___

A

oculomotor nuclei

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8
Q

Which pair of nerves innervate the tensor tympani and stapedius muscle?

A

Trigeminal and facial

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9
Q

WHere is the spiral organ (of corti) located?

A

Cochlear duct

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10
Q

Which CN does not have a parasympathetic component?

A

Vestibulocochlear

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11
Q

3 of the following nerves have similar fxn. Which is different?

  • Facial
  • Vagus
  • Glossopharyngeal
  • Trochlear
A

Trochlear

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12
Q

Which bundle of nerve fibers contains the central branches of the primary sensory neurons that provide for general sensation (not taste) from the posterior third of the tongue?

A

Spinal trigeminal tract

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13
Q

What statement is true?

a. crossing of ascending fibers at more than one level provides exclusive representation of the contralateral cochlea in the primary auditory cortex
b. there are both crossed and uncrossed ascending auditory fibers in in the pons and midbrain
c. all ascend central axons in the auditory pathway cross the midline in the medulla
d. no ascending central axons in the auditory pathway cross the midline at any level.

A

b. there are both crossed and uncrossed ascending auditory fibers in in the pons and midbrain

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14
Q

Which is involved in the pupillary light reflex?

a. lateral lemniscus
b. optic ganglion
c. cilliary ganglion
d. oculomotor muscles

A

C. Cilliary ganglion

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15
Q

How many functional components are in the brainstem?

A

7

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16
Q

What is the fluid inside of scala media?

A

Endolymph

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17
Q

What muscle is supplied by the sixth cranial nerve?

a. superior oblique
b. inferior oblique
c. medial rectus
d. lateral rectus

A

D. Lateral Rectus

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18
Q

Which functional componenet do the trochlear, oculomotor, and hypoglossal nerves have in common?

A

GSE

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19
Q

Where are the motor neurons that innervate the larynx and pharynx located?

A

Nucleus ambiguus

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20
Q

Which is the major decussation of the auditory pathway?

A

Trabezoid Body/fibers

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21
Q

The cochlear nuclei…

a. are located beneath the floor of the fourth ventricle
b. project ipsilaterally to the auditory cortex
c. receive afferents from the vestibular ganglion
d. receive afferents from the spinal ganglion

A

d. receive afferents from the spinal ganglion

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22
Q

Where might a lesion cause loss of taste?

A

Solitary tract and nucleus

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23
Q

Which cranial nerve carries taste sensation from the back of the throat, including the epiglottis?

A

Vagus

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24
Q

Which group of nerves contain the special visceral afferent functional component?

a. facial, olfactory, vagus
b. glossopharyngeal, vagus, hypoglossal
c. glossopharyngeal, trigeminal, abducens
d. trigeminal, facial, oculomotor

A

a. facial, olfactory, vagus

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25
Q

What gyrus is the auditory cortex?

A

Transverse temporal

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26
Q

What branch of the trigeminal nerve carries motor fibers

A

Mandibular

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27
Q

Olfactory epithelia contain which types of cells?

A

Bipolar

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28
Q

Olfactory glomeruli receptor axons synapse where?

A

Olfactory Bulb

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29
Q

Olfactory tract contains what type of cells?

A

Mitral Cell Axons

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30
Q

What functional component are parasympathetic nerves?

A

GVE

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31
Q

What functional component do CN 3, 6 and 12 share?

A

GSE

32
Q

Shine a light in right eye but left pupil does not respond. Which nerve is damaged?

A

Left Oculomotor N.

33
Q

Corneal blink reflex involves?

A

CN trigeminal(afferent) and CN facial (efferent)

34
Q

A lesion to what area will cause a loss of taste.

A

Nucleus Solitaris

35
Q

Fovea contains what type of cells?

A

Cones

36
Q

Olfactory cells axons are made of what type of cell?

A

Mitral Cell

37
Q

What olfactory striae is contralateral?

A

Medial

38
Q

Which olfactory striae is involved in conscious perception of smell?

A

Intermediate Olfactory Striae

39
Q

What is not part of the auditory pathway?

A

Inferior Auditory nucleus

40
Q

Lateral Rectus is innervated by…

A

Abducens N

41
Q

When looking to the right you activate?

A

Right Abducens and left occulomotor N

42
Q

Which statement is true?

A

This shit sucks.

43
Q

Pharyngeal and laryngeal muscles are innervated by fibers originating in the ?

A

Nucleus Ambiguus

44
Q

Where do olfactory cells cross?

A

Anterior Commissure

45
Q

What innervates muscles of mastication?

A

Trigeminal

46
Q

Nystagmus, cold/warm water in ear? <— WTF?

A

Cilliary ganglion

47
Q

Nerves involved in SVA

A

I, VII, X

48
Q

Two nerves involved in the corneal blink reflex?

A

Trigeminal and facial

49
Q

Examples of photoreceptors

A

Rods and cones

50
Q

What part of the visual system contains photoreceptors?

A

Retina

51
Q

Concentration in the fovea?

A

Cones

52
Q

What is not true of solitary tract?

A

Goes to anterior 1/3 of tongue for taste

it goes to POSTERIOR 1/3

53
Q

What do these have in common (Oculomotor, Hypoglossal, and Trochlear nerves)?

A

GSE

54
Q

What is the sensory organ for dynamic equilibrium?

A

Cristae

55
Q

Which is NOT a direct target of axon cells?

A

Visual Cortex

56
Q

Where do ganglia cells NOT terminate?

A

Visual Cortex

57
Q

Ascending Medial Longitudinal fasciculus ends in

A

Oculomotor Nucleus

58
Q

What the solitary conveys

A

Afferent limb of reflexes and modulates cardiac and respiratory function

59
Q

Tensor tympani innervated by

A

V3 Mandibular

60
Q

Hyoglossus innervations?

A

Hypoglossal N

61
Q

Temporal lobe includes..

A

auditory cortex

62
Q

Which bundles of Nerve Fibers contains central branches of primary sensory neurons that provide for general sensations from posterior 1/3 of the tongue?

A

Spinal Trigeminal Tract

63
Q

72 year old lady with history of cardiovascular disease has sudden onset confusion during which her left arm and leg became weak. Weakness was most likely due to damage to which of the following?

A

Right Internal capsule

64
Q

Muscles of the pharynx, palate, and upper esophagus are innervated by

A

vagus

65
Q

These neurons are replaced about every 2 months

A

Olfactory

66
Q

Olfactory glomeruli contain fibers from all except?

A

Granule cells

67
Q

Photoreceptors activated by dim light

A

Rods

68
Q

Olfactory tract is outgrowth from?

A

Telencephalon

69
Q

Optic tract is outgrowth from?

A

diencephelon

70
Q

Which system cant be mapped in the brain?

A

Olfactory

71
Q

Where is vestibular nucleus?

A

Beneath lateral part of fourth ventricle

72
Q

Where do axons containing olfactory nerves end by synapsing with other neurons

A

Glomeruli of Olfactory bulb

73
Q

Which of following sequences mist accurately summarizes some of central connections of olfactory system?

A

Olfactory epithelium–> tract –> bulb

74
Q

Functional component associated with cell bodies located in visceromotor ganglia are

A

GVE

75
Q

Cochlear nerve receives __ from __

A

afferents

spinal ganglion

76
Q

Where are receptor cells that initiate reflex nystagmus when external ear is irritated from cold or warm water?

A

Ampulla of lateral semicircular duct

77
Q

Where would lesion cause blindness in right halves of visual fields of both eyes?

A

Left Optic Tract

CNS (6 decks)

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