thalamus Flashcards
the thalamus is the ______ diencephalic subdivision
largest
the thalamus relays ______
all main sensory systems except olfactory pathway
motor inputs from cerebellum and basal ganglia
limbic inputs
modulatory inputs involved in behavioral arousal and sleep-wake cycles
the thalamus is found bet _____
interventricular foramen and posterior commissure
it extends from ____ to _____
rom 3rd ventricle to medial border of the posterior limb of internal capsule
it is dorsal to _____
hypothalamic sulcus
anterior end is _____ in shape
narrow and rounded
posterior end is _____ in shape
expanded
anterior end forms _____
posterior boundary of the interventricular foramen
posterior end forms _____
pulvinar
the pulvinar overhangs _____
superior colliculus and superior brachium
what is the LGB
small elevation on the under aspect of the lateral portion of the pulvinar
sup surface is covered by _____
tela choroidea and fornix
inf surface is cont with _____
tegmentum of midbrain
medial surface forms ______
superior part of the lateral wall of the 3rd ventricle
medial surface is connected to opposite thalamus via _____
interthalamic connection
lateral surface is covered by _____
ependyma
lateral surface forms _____
part of the floor of the lateral ventricle
relate lateral surface, lentiform and internal capsule
lateral surface is separated from lentiform nucleus by internal capsule
sup surface subdivision is covered by _____
striatum zonale - white matter
lat surface subdivision is covered by _____
external medullary lamina
divides the thalamus into medial and lateral halves
internal medullary lamina
describe structure of internal medullary lamina
y-shaped anterosuperiorly
subdivision of the thalamus
Anterior
Lateral
Medial
Midline
Intralaminar nuclei
Reticular nuclei
anterior thalamic nuc is closely assoc w
limbic system