Thalamus Flashcards
What does the word ‘thalamus’ mean in greek?
Inner chamber or bedroom
What is the main function of the thalamus?
Information going to the cerebral cortex is first relayed in the thalamus which then projects to the cerebral cortex.
The thalamic nuclei receive reciprocal feedback connections from the cortical areas to which they project… TRUE/FALSE
TRUE.
Explanation : Infact the corticothalamic projections outnumber the thalamocortical projections
In which part of the forebrain do we find the thalamus?
The thalamus is situated in the diencephalon together with the hypothalamus and epithalamus
How does the thalamus appear in the horizontal section?
It appears as deep, Grey matter structures shaped like eggs, with their posterior ends angled outwards, forming an inverted V
The internal medulary laminar divides the thalamus into three groups of nuclei which include……
Medial nuclear group,lateral nuclear group, and anterior nuclear group.
Name the nuclei situated within the internal medulary laminar.
Intra-laminar nuclei
Which nuclei lies adjacent to the third ventricle and is continuous and functionally similar to the intra laminar nuclei?
Midline thalamic nuclei
Which nucleus borders the lateral aspect of the thalamus?
Reticular nucleus
What are the 3 main categories of the thalamic nuclei?
*Relay nuclei
*intralaminar nuclei
*Reticular nuclei
What is the function of the ventral posterior lateral nucleus (VPL)?
Relays somatosensory spinal inputs to the cortex
What is the function of the ventral posterior medial nucleus (VPM)?
Relays somatosensory cranial nerve inputs to the cortex
What is the function of the Lateral geniculate nucleus (LGN)?
Relays visual information to the cortex
What is the function of the medial geniculate nucleus (MGN)?
Relays auditory inputs to the cortex
What is the function of the Ventral Lateral (VL) and Ventral Anterior (VA) nucleus?
Relays basal ganglia and cerebellar inputs to the cortex
