diencephalon Flashcards

1
Q

lamina terminalis is where

A

the anterior neural tube closed

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2
Q

nucleus right above the optic chiasm

A

suprachiasmatic nucleus; has to do with circadian rhythm

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3
Q

mammillary bodies marks

A

the posterior edge of the hypothalamus

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4
Q

relationship between thalamus and midbrain

A

a lot of it overlies the midbrain with the superior colliculi, so when you cut it, often times you will see both parts in a section

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5
Q

hypothalamic sulcus separates?

A

the hypothalamus from the thalamus

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6
Q

pineal gland locale

A

between the superior colliculi, superiorly. part of the diencephalon

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7
Q

pulvinar is part of the

A

visual system. its the big part on the posteromedial part of the thalamus

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8
Q

input layer of the cortex

A

layer 4

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9
Q

output layer of the cortex

A

layer 6

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10
Q

function of the subthalamus

A

relays sensory information (somatomotor zone ofthe diencephalon)

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11
Q

function of the epithalamus

A

regulation of circadian rhythms; linking olfacotry system to brainstem

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12
Q

function of the hypothalamus

A

coordination of ans with endocrine system; participation in visual pathway

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13
Q

anterior part of the pituitary is from

A

stomodeum, rathke’s pouch

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14
Q

posterior pituitary gets projections

A

from something in the brain

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15
Q

fornix shape (starts and ends where)

A

C shaped; projection from the hippocampus to the mamillary bodies

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16
Q

nucleus with stripes in it

A

lateral geniculate nucleus

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17
Q

thalamic nuclei are segregated by?

A

connection to other brain regions

18
Q

some places that the thalamus gets its info from

A

limbic system, reticular formation, sensory inputs, cerebellum, basal ganglia

19
Q

thalamus-cortex connections

A

cortical regions are connected to very specific thalamic nuclei

20
Q

ventral posterior medial division of thalamus gets what info

A

sensory face

21
Q

ventral posterior lateral division of thalamus gets what info

A

sensory body

22
Q

lateral posterior division of thalamus gets what info

23
Q

relationship between thalamus and internal capsule

A

thalamus is always medial

24
Q

striatum/corpora striatum

A

catch all term for layers in the internal cortex

25
striatum different from striate?
YES striate is somewhere else relating to the visual system
26
medial hypothalamic zone fxns
hormones, circadian rhythms, body temperature, feeding, cardiovascular fxn
27
lesions to subthalamic nucleus
hemiballismus; flailing of one half of the body; basal ganglia can't control their mvmt adequately
28
major blood vessels of the diencephalon
lenticulostriate(MCA), recurrent artery of heubner (ACA)
29
anterior choroidal artery right next to
optic tract. if you have a problem here you can get deficits in the visual field like heminanopsias
30
anterior nucleus of thalamus blood supply
thalamoperforating aa
31
head of caudate gets blood from?
medial striate aa
32
betz cells are in what layer
layer 5 of cerebral cortex
33
prefrontal cortex function
its multimodal for excecutive brain restraint, initiative, and order
34
optic radiations are where
in white matter of both the parietal and temporal lobes
35
relationship between basal ganglia and cortex
they are directly connected
36
relationship between the cereBELlum and the cortex
indirectly connected through the pons
37
anterior perforated substance is from
this is because the lenticulostriate arteries are perforating the dorsal part of the brain to send blood supply to thalamus/basal ganglia/internal capsule
38
short gyri of insula
related to disgust, olfactory, taste fxn.
39
most of taste ends up?
in the insular cortex
40
when you thing of GVA and SVA what do you think of
insular cortex
41
three structures with a c shape
stria terminalis, fornix, caudate