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molecular and cellular neuroscience > CNS organization > Flashcards

CNS organization Flashcards

1
Q

the ___ mater has two layers the meningeal layer and endosteal layer; the whole structure itself fused to periosteum

A

dura

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2
Q

covers brain; contacts epithelial layer of dura mater

A

arachnoid

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3
Q

attached to brain surface by glial cells called astrocytes

A

pia mater

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4
Q

dural fold which projects between the cerebral hemispheres

A

falx cerebri

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5
Q

dural fold which seperated cerebellum and cerebrum

A

tentorium cerebelli

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6
Q

dural fold which divides cerebellar hemispheres below the tentorium cerebelli

A

falx cerebelli

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7
Q

surrounds all exposed surfaces of CNS; cushions delicate neural structures and supports brain

A

CSF

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8
Q

isolates CNS neural tissue from general circulation, keeps out toxins and drugs and hydrophillic substances

A

blood-brain barrier

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9
Q

neurovascular unit of the blood brain barrier consists of what cells

A

endothelial cells, pericytes (support endothelial), astrocytes (have tight junctions), microglia

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10
Q

two tight junction proteins

A

occludins, claudins

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11
Q

pathways across blood brain barrier: paracellular aqueous pathway

A

only water soluble agents

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12
Q

pathways across blood brain barrier: transcellular lipophilic pathway

A

lipid soluble pathway (most drugs enter this way)

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13
Q

PNS (senses; skin, muscle and joints, DRG)

A

somatic division

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14
Q

touch, temp. and pain below the head and neck region are apart of the

A

somatic (DRG)

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15
Q

craniosacral division in the

A

parasympathetic

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16
Q

thoracolumbar division in the

A

sympathetic

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17
Q

CN I

A

olfactory

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18
Q

CN II

A

optic

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19
Q

CN III

A

oculomotor

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20
Q

CN IV

A

trochlear

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21
Q

CN V

A

trigeminal

22
Q

CN VI

A

abducens

23
Q

CN VII

A

facial

24
Q

CN VIII

A

vestibulocochlear

25
Q

CN IX

A

glossopharyngeal

26
Q

CN X

A

vagus

27
Q

CN XI

A

accessory

28
Q

CN XII

A

hypoglossal

29
Q

CN I, II enter and exit where

A

cerebrum

30
Q

CN III, IV enter and exit where

A

midbrain

31
Q

CN 5,6,7,8 exit and enter where

A

pons

32
Q

CN 9,10,11,12 exit and enter where

A

medulla

33
Q

how many pairs of spinal nerves in humans

A

31

34
Q

cervical nerves

A

C1-8

35
Q

thoracic nerves

A

T1-12

36
Q

Lumbar nerves

A

L1-5

37
Q

Sacral nerves

A

S1-5

38
Q

the brain stem is comprised of what three divisions of the CNS

A

medulla
pons
midbrain

39
Q

brain stem has what functions

A

preganglionic parasympathetic output
reticular formation (arousal level)

40
Q

this structure receives somatosensory information from spinal cord and motor information from spinal cord (coordinates movement and posture)

A

cerebellum

41
Q

contains two major subdivisions; thalamus and hypothalamus

A

diencephalon

42
Q

relay station (integrates motor info from cerebellum and transmits to cerebral hemispheres) does gating and modulatory functions

A

thalamus

43
Q

controls a variety of functions by controlling hormonal secretions from pituitary gland (motivational system and circadian rhythm)

A

hypothalamus

44
Q

control of fine motor movements

A

basal ganglia

45
Q

emotion

A

amygdala

46
Q

controls voluntary motor functions

A

primary motor

47
Q

conscious awareness of motor functions

A

primary motor

48
Q

conscious awareness of sensation

A

primary sensory

49
Q

integrate diverse information for purposeful action, secondary and tertiary regions

A

association areas

50
Q
A

molecular and cellular neuroscience (16 decks)

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