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Neuroanatomy Lab > S2: Internal Anatomy of the brain and ventricles > Flashcards

S2: Internal Anatomy of the brain and ventricles Flashcards

1
Q

what is the roof of this? what forms the floor?

A

4th ventricle

roof – cerebellum

floor - continuation of the tegmentum into the pons

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2
Q

1

a cavity in these region is caused by what?

A

anterior horn of lateral ventricle

head of caused by caudate nucleus which lies on the floor of the anterior horn

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3
Q

2

A

choroid plexus

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4
Q

4

A

poserior horn of lateral ventricle

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5
Q

6

what causes a hollow on the ventral meidal surface?

A

inferior (temporal) horn of lateral ventricle

hippocampus

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6
Q

12

A

interventricular formamen

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7
Q

8

A

third ventricle

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8
Q
A

cerebral aqueduct

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9
Q
A

cerebral aqueduct

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10
Q
A

lateral ventricle

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11
Q

green circle

A

third ventricle

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12
Q
A

4th ventricle

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13
Q
A

4th ventricle

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14
Q

F

A

4th ventricle

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15
Q

G

A

Foramina of Monroe

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16
Q

B

A

Foramina of Luschka

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17
Q
A

lateral ventricle

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18
Q
A

thalamus

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19
Q
A

head of caudate

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20
Q
A

putamen

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21
Q

sx of a lesion here?

A

internal cpasule (posterior limb)

lesions in the posterior limb of the capsule produce dramatic symptoms of sensory loss and paralysis.

the posterior limb carries somatic sensory and motor information from each side of the central sulcus.

(hesclys pyrus sends priojection to mgn from here)

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22
Q
A

genu of the internal capsule

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23
Q

where does this carry fibers to and from?

A

internal cpasule (anterior limb)

to and from the frontal lobe

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24
Q
A

thalamus

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25
Q

what fibers does this carry

A

internal capsule (posterior limb)

  1. somatic sensory and motor information from each side of the central sulcus.
  2. Further posteriorly visual information passes here on the way to the occipital lobes from the LGN in the visual radiations.
  3. Auditory information to the primary auditory cortex in the superior temporal gyrus from the medial geniculate nucleus (MGN)

4. Most axons descending from the cortex going to the brainstem and spinal cord pass through there

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26
Q
A

internal capsule (genu)

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27
Q
A

cadudate nucleus (head)

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28
Q
A

fornix

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29
Q
A

insula

30
Q
A

hippocampus

31
Q
A

septum pellucidum

32
Q
A

fornix (columns)

33
Q
A

putamen

34
Q
A

posterior horn of lateral ventricle

35
Q
A

anterior horn of lateral ventricle

36
Q
A

globus pallidus

37
Q
A

globus pallidus

38
Q
A

visual radiations

39
Q
A

hippocampus

40
Q
A

third ventricle

41
Q
A

hypothalamus

42
Q

purple

input?

output?

A

lateral geniculate n. (hypothalmus in red) – above the lateral ventricle

input – optic tract

output – visual cortex via optic radiations

43
Q
A

amygdala (over lateral geniculate)

44
Q
A

hippocampus

45
Q

what does this carry?

A

crus cerebri

motor functions going from the cortex to the brain stem and spinal cord

46
Q
A

hypothalamus

47
Q
A

amygdala

48
Q
A

optic tract

49
Q

purple

A

pulvinar

(near the lateral geniculate)

50
Q

purple

A

medial geniculate

(lateral geniculate in red)

51
Q
A

inferior horn of lateral ventricle

52
Q
A

pulvinar

53
Q
A

putamen

54
Q
A

mamilary body/hypothalamus

55
Q
A

third ventricle

56
Q
A

anterior commisure

57
Q
A

corpus callosum

58
Q
A

fornix

59
Q
A

fornix

60
Q
A

LGN

61
Q
A

globus pallidus

62
Q
A

amygdala

63
Q
A

hippocampus

64
Q
A

mamillary bodies

65
Q
A

fornix

66
Q
A

splenium of the corpus callosum

67
Q
A

posterior commisure

68
Q
A

fornix

69
Q
A

Foramen of monroe

connects lateral and third ventricles

70
Q
A

pineal gland

sx of tumor here

  1. paralysis of upward gaze
  2. weird hypotal. stuff
  3. hydrocephalus
71
Q
A

Neuroanatomy Lab (36 decks)

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