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CNS > Test 2 practice questions (old) > Flashcards

Test 2 practice questions (old) Flashcards

1
Q

A bundle of fibers that form a specific tract may also be called a ___

A

fasciculus

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2
Q

In general, ganglia are found in the ___, while groups of neurons in the __ are called nuclei.

A

PNS

CNS

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3
Q

Which region of neural plate forms PNS?

A

Neural crest

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4
Q

Filum terminale is remnant of what structure?

A

Pia Mater

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5
Q

Somatosensory cortex is located in the ___ gyrus

A

postcentral

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6
Q

Motor neurons within the ventral horns are examples of __ type neurons

A

Multipolar

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7
Q

Connection between most neurons in the mammalian NS is?

A

Synapse

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8
Q

Which axons leave spinal cord in the ventral root?

A

Somatic Motor

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9
Q

How many neurons participate in a stretch reflex such as the knee jerk reflex?

A

2

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10
Q

Alpha motor neurons innervate….

A

Extrafusal motor fibers

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11
Q

Matching: Match neuron type with location. Options are Unipolar (pseudounipolar), Bipolar, Multipolar

Spinal Ganglion
Vestibular Ganglion
Outer pyramidal layer of cortex
DRG
Inner granule layer of cortex
A 
Multipolar
Bipolar
Multipolar
Unipolar (pseudounipolar)
Multipolar
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12
Q

What structure(s) end at vertebral level S2?

A

Filum Terminale

Dural Sac

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13
Q

Where does conus medularis end?

A

2nd Lumbar

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14
Q

Most common type of synapse

A

Axodendritic

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15
Q

What is a tract?

A

Bundle of fibers in the CNS

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16
Q

What CN exits the brainstem between the olive and pyramid?

A

Hypoglossal

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17
Q

T/F Neurotransmitters reach terminal ends of axon by anterograde transport

A

True

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18
Q

Which does not make up a part of coccygeal ligament?

A

Grey matter

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19
Q

Dentate ligament is made up of…

A

Pia Mater

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20
Q

The following structure belongs to metencephalon…

A

Facial colliculus

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21
Q

Inf. cerebellar peduncle attaches the __ to the cerebellum.

A

Medulla

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22
Q

The cauda equina is…

A

Lumbar and sacral roots extending inferior to the end of the cord.

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23
Q

What connects broca’s to wernicke’s area?

A

Arcuate association fibers

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24
Q

What Artery runs in lat. fissure?

A

Middle Cerebral

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25
What Artery supplies Lateral brain?
Middle Cerebral
26
What artery supplies visual cortex?
Posterior Cerebral
27
What lobe contains visual cortex?
Occipital
28
What deep vein goes to the straight sinus?
Great cerebral vein of galen
29
Territory from which a sensory unit can be excited is known as...
Receptive field
30
Receptors that respond to stimuli from the internal environment are known as...
Interoreceptors
31
Aging on motor units results in??
Loss of motor neurons from the cord and stem
32
FIbers cross where in the medulla?
Internal arcuate fibers
33
The reticular formation is located where?
In the tegmentum of the midbrain, pons, and medulla
34
What do primary afferent sensory receptors measure?
Rate of stretch
35
What do secondary afferent sensory receptors measure?
How long stretch lasts
36
What are specialized epithelial cells that act as touch receptors?
Merkel disc
37
What artery supplies visual cortex?
Posterior Cerebral
38
Where do fibers originate that form the gracile fasciculus?
Upper half of spinal cord
39
Nuclear bag fibers receive ___ and ___ fibers
Ia primary afferent | Group II afferent
40
There are __ pairs of spinal nerves in the spinal cord.
31
41
Corticospinal tract descends in the ___ limb of the internal capsule and is originated in the __ cortex
Posterior/ motor
42
In the spinal cord, the marginal zone mainly consists of fibers and ___.
Mature cells
43
Which tract releases serotonin at the spinal cord level?
Raphe spinal
44
Unconscious proprioceptive fibers of fasciculus cuneus terminate in the ___ nucleus
Accessory cuneate
45
The ___ tract is concerned with intersegmental spinal reflexes.
Fasciculus Proper
46
The origin or rubrospinal tract is located in the red nucleus of the ___
Midbrain
47
The ___ tract originates in the Sup. Colliculus
Tectospinal
48
What structure gives rise to lateral corticospinal tract?
Pyramidal decussation
49
The spinal lemniscus (Spinothalamic Tract) is concerned with ___ functional components
GSA
50
Which tract decussates in the midbrain?
Ventral spinocerebellar
51
Involuntary motor control tracts terminate mainly in which lamina?
7, 8, some of 9
52
Which nuclei is part of auditory pathway?
Inf. Colliculus
53
ANterior horn consists of Rexed lamina or laminae ___
IX
54
Which vessel supplies the majority of the lateral side of cerebrum?
Middle Cerebral
55
which cerebellar nucleus is biggest in humans?
Dentate
56
Where are postganglionic sympathetic bodies located?
Near target organ
57
Which system cant be mapped in the brain?
Olfactory
58
Which CN has four nuclei in the brain?
VIII
59
WHich artery is biggest branch off of internal carotid artery?
Middle cerebral
60
AT which level does the pathway for pain and temperature sensation for the lower limbs cross the midline?
lumbosacral spinal cord
61
The circuit for explained emotion is the __ and is involved with the limbic system
Papez circuit
62
SPinal cord segments that form the cervical enlargement
C5-T1
63
___ nucleus is necessary for pupillary light reflex
Pretectal
64
What NT causes inhibition in the motor circuit of the cortex?
GABA
65
Which NT causes excitation in motor nucleus of cortex?
Glumatime
66
Purkinje cell is primarily __ in function
Inhibitory
67
Mossy cell fibers are primarily __ in function
Excitatory
68
Spinocerebellum controls ___ type movement
Gross
69
Pontocerebellum controls ___ type movements
FIne

CNS (6 decks)

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