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CNS > Test 2 #2 > Flashcards

Test 2 #2 Flashcards

1
Q

2nd order neurons

A

dorsal nucleus of clarke

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2
Q

upper arm

A

cuneate nucleus

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3
Q

what does the Ascending reticular activating system (ARAS) do?

A

Awareness

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4
Q

Sensory information usually ends up on opposite side of cerebral cortex why?

A

2nd order neurons cross them up.

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5
Q

which pathways carry pain to cerebrum

A

spinothalamic

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6
Q

dermatome of upper arm

A

C5

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7
Q

type of nocioceptor

A

free nerve ending

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8
Q

stimulus of a stretch receptor

A

muscle spinds/Gamma neuron

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9
Q

follicular receptor

A

mechanoreceptor

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10
Q

Vibration

A

pacinian

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11
Q

left arm/leg weakness

A

Right cerebellum

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12
Q

does not contain corticobulber fibers

A

pyramid/lateral corticospinal

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13
Q

patellar reflex is an example of_____

A

myotatic

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14
Q

fibers cross

A

withdrawal reflex

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15
Q

motor units____ over time with aging

A

decrease

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16
Q

Upper arm injury

A

cuneate tract

17
Q

excessive contracted prevented by

A

golgi tendon organ

18
Q

primary afferent sensory

A

measure of rate of stretch

19
Q

gracile fasciculus/nucleus located at?

A

DRG

20
Q

Gracile fasciculus fibers cross at

A

internal arcuate fibers

21
Q

alpha motor neurons found in

A

gray matter of spinal cord

22
Q

proprioceptive sensation of lower limb carried by _____ tract

A

gracile

23
Q

nucleus dorsalis is located at ___-___ spinal levels

A

T1-L2

24
Q

does not contain corticobular fibers

A

lateral corticospinal

25
Q

posterior spinocerebellar tract originates from which nucleus?

A

Dorsal Thoracic

26
Q

Neurons in the Spinal Ganglia are

A

pseudounipolar

27
Q

Why is the cervical region of the spinal cord the largest?

A

contains the most white matter

28
Q

primary NT

A

Ach

29
Q

anterior corticospinal tract crosses the ____ of the spinal cord

A

midline

30
Q

a simultaneous and opposite patter of activity in the contralateral limb is known as?

A

crossed effect

31
Q

35 year old roofer is examined in the emergency department after falling two stories

A

anterior spinal cord

32
Q

posterior columns

A

Gracile and cuneate fasciles

33
Q

crossing fibers originating from the nucleus called?

A

internal arcuate fibers

34
Q

erector spinae is innervated by neurons in the_____

A

medial ventral horn

35
Q

What cortical layer contains BETZ cells?

A

inner pyramidal

36
Q

raphe spinal tract releases ____ at the spinal cord level

A

serotonin

CNS (15 decks)

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