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CNS > CNS Final > Flashcards

CNS Final Flashcards

1
Q 
What is NOT Part of the epithalamus?
A. pineal gland
B. reticular nucleus
C. habenula
D. stria medullaris thalami
A

B. reticular nucleus

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2
Q

How many functional components are in the brain stem?

A

seven

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3
Q 
Parallel fibers come from which of the following?
A. purkinje cells
B. granule cells
C. precerebellar nuclei
D. inferior olivary neurons
A

B. granule cells

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4
Q

What is the most rostral part of the central nervous system?

A

telencephalon

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5
Q 
Which transmitter influences movement?
A. adrenaline
B. acetylcholine
C. dopamine
D. seratonin
A

B. acetylcholine

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6
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. medial longitudinal fasciculus
B. solitary tract
C. spinal trigeminal nucleus
D. hypoglossal nerve
A

B. solitary tract

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7
Q

The parasympathetic preganglionic neurons to the heart are located in the…

A

dorsal motor nucleus of the vagus

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8
Q 
Which cerebellar pathway has fibers that cross?
A. posterior spinocerebellar
B. rostral spinocerebellar
C. cuneospinocerebellar
D. anterior spinocerebellar
A

D. anterior spinocerebellar

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9
Q

A receptor that monitors events within the body is called…

A

an enteroceptor

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10
Q

Where are the cell bodies of the neurons whose axons form the olfactory nerve?

A

olfactory bulb

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11
Q 
Which nucleus is in the midline?
A. Paramedian
B. Central
C. Raphe
D. Medial
A

C. Raphe

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12
Q

Where are descending upper motor fibers found?

A

cerebral peduncle, pyramid, & internal capsule

possibly an all the above question?

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13
Q

Why are neurons of the olfactory epithelium unique?

A

they are the only neurons that continue to be produced and are regularly replaced throughout adult life

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14
Q

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

A

vagus

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15
Q

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

A

GSE

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16
Q

The pelvic splanchnic nerves are composed of ____ fibers

A

parasympathetic postganglionic

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17
Q

Which fiber is stimulated by stretching the muscle spindle?

A

IA

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18
Q

How much cerebral spinal fluid is flowing through the ventricles, subarachnoid space and cisterns at any given time?

A

150mL

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19
Q 
Which pair of nerves innervate the tensor tympani and stapedius muscles?
A. chorda tympani and tympanic nerve
B. auditory and glossopharyngea?
C. trigeminal and facial
D. vagus and accessory
A

C. trigeminal and facial

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20
Q

Where is the spiral organ (of Corti) located?

A

cochlear duct

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21
Q

If a dye, which is a very large molecule, is administered intravenously, it will stain neurons in what location?

A

circumventricular organs

22
Q

The vestibular system is connected ipsilaterally to with which part of the cerebellum?

A

flocculonodular lobe

23
Q 
Which are derivatives of neural crest cells?
A. glial cells of the CNS
B. motor neurons
C. cerebral cortex
D. sensory neurons
A

A. glial cells of the CNS

24
Q

The cerebral aqueduct is located in the ____.

A

midbrain

25
Q 
Which dermatome is located on the upper limb?
A. C7
B. T10
C. L3
D. T4
A

A. C7

26
Q

Some mitral cell axons cross at the _____.

A

anterior commissure

27
Q

Where are the lower motor neurons that innervate the hand located?

A

ventromedial nucleus

28
Q

The posterior spinocerebellar tract originates from which nucleus?

A

dorsal thoracic (Clarke’s)

29
Q

Ascending fibers of the medial longitudinal fasciculus (MLF) end in the ________

A

superior olivary nucleus

30
Q

What lobe contains the auditory cortex?

A

Temporal

31
Q

The CAUSE of the most common basal ganglia disorder is…

A

dopamine depletion in the substantia nigra

MC bgd = parkinson’s

32
Q

The Purkinje cells of the pontocerebellum (neocerebellum) projects fibers mainly to the ____ nucleus

A

dentate

33
Q

Which thalamic nucleus is a relay for somatosensory pathways?

A

ventral posterior

34
Q

What is the most common type of glial cell?

A

astrocyte

35
Q

Where are alpha motor neurons found?

A

grey matter of the spinal cord

36
Q

What is a CNS fiber tract?

A

a bundle of nerve fibers with the same function

37
Q

What sulcus/fissure splits the cerebral hemispheres?

A

longitudinal

38
Q

Which artery passes over the corpus callosum?

A

anterior cerebral

39
Q

Which artery supplies most of the lateral cerebrum?

  • posterior
  • superior
  • anterior
  • middle
A

middle cerebral

40
Q

Where are the third order neurons of a somatosensory pathway located?

A

thalamus

41
Q

Which statement is true?
A. all ascending central axons in the auditory pathway cross the midline in the medulla
B. crossing of ascending fibers at more than one level provides exclusive representation of the contralateral cochlea in the primary auditory cortex
C. there are both crossed and uncrossed ascending auditory fibers in the pons and midbrain
D. no ascending central axons in the auditory pathway cross the midline at any level

A

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

42
Q

Normally, both pupils respond with constriction when a light is shone into either eye. Identify a lesion in which, when a light is shone onto the right retina, the left pupil responds but the right does not.

A

transection of the right oculomotor nerve

43
Q

What kind of receptor is a muscle spindle?

A

mechanoreceptor

44
Q

What are the functional units of the Central Nervous System?

A

neurons

45
Q

The principal output neurons of the cerebral cortex are ____

A

pyramidal cells

46
Q 
The lamina of Rexed (spinal lamina of the gray matter) that collectively form the posterior horn of the spinal cord are:
A. I-VI
B. I, II
C. I-V
D. II-VII
A

A. I-VI

47
Q 
The sacral elements of the spinal cord may be crushed by a fracture of which vertebrae?
A. L5
B. L3
C. S1
D. L1
A

A. L5

48
Q 
What part of the internal capsule lies between the thalamus and putamen?
A. posterior limb
B. Genu
C. anterior limb
D. retrolenticular area
A

A. posterior limb

49
Q

In “Monty Python and the Holy Grail”, the characters run away from a big scary bunny rabbit. In this instance, their _____ was being used.
A. parasympathetic nervous system
B. sympathetic nervous system

A

B. sympathetic nervous system

50
Q

Which sulcus separates the primary motor cortex from the somatosensory cortex?

  • calcarine
  • lateral
  • marginal
  • central
A

central

CNS (1 decks)

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