L13: Thalamus

caudal boundary of thalamas

behind mamillary body to posterior commisure

rostral boundary thalamus

anterior commisure along lamina terminalis to optic chiasm

what are the mamillary bodies

1. relay stations for formation of memories

2. memories are influenced by the limbic system (emotions)

whats the posterior commisure involved in

light reflex pathway

what does the anterior commisure do

connects the temporal lobes

whats the lamina terminalis

thin sheet that joins w the tuber cinerum to form the pituitary stalk

what structure is above the pituitary

optic chiasm

medial boundary of thalamus

is formed by the third ventricle.

if you stand inside the third ventricle and put your hands out you will touch thalamus on both sides

how many lobes does thalamus have

2

whats being pointed to here

third ventricle

medial to thalamus

it just has a crossing between the two parts - massa intermedia

lateral boundary of thalamus

internal capsule

what are the two parts of thalamus and what divides them

1. dorsal

2. hypothalamus

3. hypothalamic sulcus - part of 3 rd ventricle

what line makes the hypothalamic sulcus

posterior commisure to anterior commisure

part of 3rd ventricle

how is thalamus like a bunch of grapes

1. grapes are teh nuclei

2. stems = grey matter that divides thalamus into lateral, medial, and anterior