Thalamus Flashcards
(16 cards)
Diencephalon is made up of
Thalamus
Hypothalamus
Epithalamus
Sub thalamus
Anterior to thalamus
Caudate nucleus
Internal capsule (genu)
Anterior end of thalamus forms
Posterior border of interventricular foremen
Posterior end of thalamus expand and form …..
Pulvinar
Inferior surface of thalamus is continuous with ……. Anteriorly with ……… posteriorly
Hypothalamus
Tegmentum
Superior Surface
Separated from
overlying body of
fornix by …….
choroid
fissure, with tela
choroidea within it
Superior Surface
Lateral border;
marked by
stria
terminalis and
overlying
thalamostriate vein
Stria terminalis
and
thalamostriate v.
separates
thalamus from
body of caudate
nucleus
Narrow lateral strip
on sup surface
Lamina Affixa
A slender
white strand,
separating
superior and
medial
surfaces
Stria Medullaris Thalami
Vertical sheet of white
matter dividing gray
matter of thalamus into
medial and lateral halves
Internal Medullary Lamina
Seperates ventral and
lateral thalamus from
thalamic reticular
nuclei
External Medullary Lamina
Main Nuclear Groups of Thalamus
Anterior (rostral) nuclei
➢ Medial nuclei
➢ Lateral nuclei (in dorsal half of lateral nuclear mass extending
posteriorly to include pulvinar)
➢ Ventral nuclei (in ventral half of lateral nuclear mass)
➢ Ventral nuclei (in ventral half of lateral nuclear mass)
➢ Medial geniculate body
➢ Lateral geniculate body
➢ Intralaminar nuclei
➢ Midline nuclei (which either abut the ependyma of the lateral walls of
3rd ventricle medially, or lie adjacent to the interthalamic adhesion
➢ Reticular nuclei (separated from main nuclear mass by external
medullary lamina
➢ Reticular nuclei + ventral geniculate nucleus + zona incerta = Ventral
thalamus
Metathalamus
Lateral
geniculate
body
Medial
geniculate
body
Pulvinar
Lateral Geniculate Body
● Afferent; …….
Efferent….
Retina
Broadman 17
Medial Geniculate Body
Afferent ……
Efferent ……
Lateral lembiscus
Inferior colliculus
Broadman 41 42
