diencephalon Flashcards
lamina terminalis is where
the anterior neural tube closed
nucleus right above the optic chiasm
suprachiasmatic nucleus; has to do with circadian rhythm
mammillary bodies marks
the posterior edge of the hypothalamus
relationship between thalamus and midbrain
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
hypothalamic sulcus separates?
the hypothalamus from the thalamus
pineal gland locale
between the superior colliculi, superiorly. part of the diencephalon
pulvinar is part of the
visual system. its the big part on the posteromedial part of the thalamus
input layer of the cortex
layer 4
output layer of the cortex
layer 6
function of the subthalamus
relays sensory information (somatomotor zone ofthe diencephalon)
function of the epithalamus
regulation of circadian rhythms; linking olfacotry system to brainstem
function of the hypothalamus
coordination of ans with endocrine system; participation in visual pathway
anterior part of the pituitary is from
stomodeum, rathke’s pouch
posterior pituitary gets projections
from something in the brain
fornix shape (starts and ends where)
C shaped; projection from the hippocampus to the mamillary bodies
nucleus with stripes in it
lateral geniculate nucleus
thalamic nuclei are segregated by?
connection to other brain regions
some places that the thalamus gets its info from
limbic system, reticular formation, sensory inputs, cerebellum, basal ganglia
thalamus-cortex connections
cortical regions are connected to very specific thalamic nuclei
ventral posterior medial division of thalamus gets what info
sensory face
ventral posterior lateral division of thalamus gets what info
sensory body
lateral posterior division of thalamus gets what info
motor
relationship between thalamus and internal capsule
thalamus is always medial
striatum/corpora striatum
catch all term for layers in the internal cortex
striatum different from striate?
YES striate is somewhere else relating to the visual system
medial hypothalamic zone fxns
hormones, circadian rhythms, body temperature, feeding, cardiovascular fxn
lesions to subthalamic nucleus
hemiballismus; flailing of one half of the body; basal ganglia can’t control their mvmt adequately
major blood vessels of the diencephalon
lenticulostriate(MCA), recurrent artery of heubner (ACA)
anterior choroidal artery right next to
optic tract. if you have a problem here you can get deficits in the visual field like heminanopsias
anterior nucleus of thalamus blood supply
thalamoperforating aa
head of caudate gets blood from?
medial striate aa
betz cells are in what layer
layer 5 of cerebral cortex
prefrontal cortex function
its multimodal for excecutive brain restraint, initiative, and order
optic radiations are where
in white matter of both the parietal and temporal lobes
relationship between basal ganglia and cortex
they are directly connected
relationship between the cereBELlum and the cortex
indirectly connected through the pons
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
short gyri of insula
related to disgust, olfactory, taste fxn.
most of taste ends up?
in the insular cortex
when you thing of GVA and SVA what do you think of
insular cortex
three structures with a c shape
stria terminalis, fornix, caudate
