S2: Internal Anatomy of the brain and ventricles Flashcards Preview

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Flashcards in S2: Internal Anatomy of the brain and ventricles Deck (71)
1

 

 

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

4th ventricle

 

roof -- cerebellum

floor - continuation of the tegmentum into the pons

2

#1

 

a cavity in these region is caused by what?

anterior horn of lateral ventricle

 

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

3

#2 

choroid plexus

4

#4

poserior horn of lateral ventricle

5

#6

 

 

 

what causes a hollow on the ventral meidal surface?

inferior (temporal) horn of lateral ventricle

 

hippocampus

6

#12

interventricular formamen

7

#8

third ventricle

8

cerebral aqueduct

9

cerebral aqueduct

10

lateral ventricle

11

green circle

third ventricle

12

4th ventricle

13

4th ventricle

14

F

4th ventricle

15

G

Foramina of Monroe

16

B

 Foramina of Luschka

17

lateral ventricle

18

thalamus

19

head of caudate

20

putamen

21

sx of a lesion here?

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)

22

genu of the internal capsule

23

where does this carry fibers to and from?

internal cpasule (anterior limb)

to and from the frontal lobe

24

thalamus

25

what fibers does this carry

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

26

internal capsule (genu)

27

cadudate nucleus (head)

28

fornix

29

insula

30

hippocampus

31

septum pellucidum

32

fornix (columns)

33

putamen

34

posterior horn of lateral ventricle

35

anterior horn of lateral ventricle

36

globus pallidus

37

globus pallidus

38

visual radiations

39

hippocampus

40

third ventricle

41

hypothalamus

42

purple

 

input?

output? 

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

 

input -- optic tract 

output -- visual cortex via optic radiations

43

amygdala (over lateral geniculate)

44

hippocampus

45

what does this carry?

crus cerebri

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

46

hypothalamus

47

amygdala

48

optic tract

49

purple

pulvinar

(near the lateral geniculate)

50

purple

medial geniculate 

(lateral geniculate in red)

51

inferior horn of lateral ventricle

52

pulvinar

53

putamen

54

mamilary body/hypothalamus

55

third ventricle

56

anterior commisure

57

corpus callosum

58

fornix 

59

fornix 

60

LGN

61

globus pallidus

62

amygdala

63

hippocampus

64

mamillary bodies

65

fornix

66

splenium of the corpus callosum

67

posterior commisure

68

fornix

69

Foramen of monroe

connects lateral and third ventricles

70

pineal gland

sx of tumor here

1. paralysis of upward gaze

2. weird hypotal. stuff

3. hydrocephalus

71