S2: Internal Anatomy of the brain and ventricles

Question 1

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

Answer 1

4th ventricle

roof – cerebellum

floor - continuation of the tegmentum into the pons

Question 2

1

a cavity in these region is caused by what?

Answer 2

anterior horn of lateral ventricle

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

Question 3

2

Answer 3

choroid plexus

Question 4

4

Answer 4

poserior horn of lateral ventricle

Question 5

6

what causes a hollow on the ventral meidal surface?

Answer 5

inferior (temporal) horn of lateral ventricle

hippocampus

Question 6

12

Answer 6

interventricular formamen

Question 7

8

Answer 7

third ventricle

Question 8

Answer 8

cerebral aqueduct

Question 9

Answer 9

cerebral aqueduct

Question 10

Answer 10

lateral ventricle

Question 11

green circle

Answer 11

third ventricle

Question 12

Answer 12

4th ventricle

Question 13

Answer 13

4th ventricle

Question 14

F

Answer 14

4th ventricle

Question 15

G

Answer 15

Foramina of Monroe

Question 16

B

Answer 16

Foramina of Luschka

Question 17

Answer 17

lateral ventricle

Question 18

Answer 18

thalamus

Question 19

Answer 19

head of caudate

Question 20

Answer 20

putamen

Question 21

sx of a lesion here?

Answer 21

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)

Question 22

Answer 22

genu of the internal capsule

Question 23

where does this carry fibers to and from?

Answer 23

internal cpasule (anterior limb)

to and from the frontal lobe

Question 24

Answer 24

thalamus

Question 25

what fibers does this carry

Answer 25

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

Question 26

Answer 26

internal capsule (genu)

Question 27

Answer 27

cadudate nucleus (head)

Question 28

Answer 28

fornix

Question 29

Answer 29

insula

Question 30

Answer 30

hippocampus

Question 31

Answer 31

septum pellucidum

Question 32

Answer 32

fornix (columns)

Question 33

Answer 33

putamen

Question 34

Answer 34

posterior horn of lateral ventricle

Question 35

Answer 35

anterior horn of lateral ventricle

Question 36

Answer 36

globus pallidus

Question 37

Answer 37

globus pallidus

Question 38

Answer 38

visual radiations

Question 39

Answer 39

hippocampus

Question 40

Answer 40

third ventricle

Question 41

Answer 41

hypothalamus

Question 42

purple input? output?

Answer 42

lateral geniculate n. (hypothalmus in red) -- above the lateral ventricle input -- optic tract output -- visual cortex via optic radiations

Question 43

Answer 43

amygdala (over lateral geniculate)

Question 44

Answer 44

hippocampus

Question 45

what does this carry?

Answer 45

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

Question 46

Answer 46

hypothalamus

Question 47

Answer 47

amygdala

Question 48

Answer 48

optic tract

Question 49

purple

Answer 49

pulvinar | (near the lateral geniculate)

Question 50

purple

Answer 50

medial geniculate | (lateral geniculate in red)

Question 51

Answer 51

inferior horn of lateral ventricle

Question 52

Answer 52

pulvinar

Question 53

Answer 53

putamen

Question 54

Answer 54

mamilary body/hypothalamus

Question 55

Answer 55

third ventricle

Question 56

Answer 56

anterior commisure

Question 57

Answer 57

corpus callosum

Question 58

Answer 58

fornix

Question 59

Answer 59

fornix

Question 60

Answer 60

LGN

Question 61

Answer 61

globus pallidus

Question 62

Answer 62

amygdala

Question 63

Answer 63

hippocampus

Question 64

Answer 64

mamillary bodies

Question 65

Answer 65

fornix

Question 66

Answer 66

splenium of the corpus callosum

Question 67

Answer 67

posterior commisure

Question 68

Answer 68

fornix

Question 69

Answer 69

Foramen of monroe connects lateral and third ventricles

Question 70

Answer 70

pineal gland sx of tumor here 1. paralysis of upward gaze 2. weird hypotal. stuff 3. hydrocephalus