Thalamus & Cerebral Cortex Flashcards
The fiber tracts running through the thalamus are called…
…internal medullary lamina
Five parts of the thalamus:
- anterior
- dorsal
- lateral
- ventral
- pulvinar
The thalamus receives afferents from:
- brainstem
- basal ganglia
- limbic system
- cerebral cortex
The cortical targets of thalamic efferent tracts can be divided into:
- specific (primary sensory cortices)
- association (association cortices)
- diffuse
Some previous thalamic connections:
- mammilothalamic tract (mammilary bodies with anterior thalamic nucleus) - memory
- pallidal pathways (globus pallidus with DM, DV, & AV thalamic nuclei)- movement
- optical pathway
- auditory pathway
Three parts of the cerebral cortex:
- neocortex (newest, 6 layers)
- paleocortex (older, olfactory, 3 layers)
- archicortex (oldest, hippocampus, 3 layers)
Latin words describing shapes (find more)
- pyriform -
- singulate -
- insular -
3 types of sensory cotices:
- primary
- secondary
- association
In the neocortex, layer IV…
…receives afferents from the thalamus.
In the neocortex, layer VI…
…sends efferents to the thalamus.
Connections within one hemisphere are called…
…ipsilateral.
Connections that link neurones from opposite hemispheres are…
…contralateral.
Where are the lateral ventricles with respect to the thalamus?
Superior and anterior to the thalamus (which is in the 3rd ventricle).
Where is the thalamus located with respect to the stratum?
The thalamus is located caudally and ventromedially from the striatum.
Some major nuclear groups of the thalamus are:
Anterior nuclear group, pulvinar, dorsal thalamus, lateral thalamus, and ventral thalamus.
