diencephalon and forebrain Flashcards
Function of internal capsule
connects cortex to the thalamus and brainstem
components of diencephalon
hypothalamus and thalamus
Function of hypothalamus
Homeostasis and is intimately associated with the pituitary and a network of visceral control structures
in the brain including: amygdala, preoptic area, nuc. solitary tract, and autonomic preganglionic motor nuclei.Homeostasis and is intimately associated with the pituitary and a network of visceral control structures
in the brain including: amygdala, preoptic area, nuc. solitary tract, and autonomic preganglionic motor nuclei.Homeostasis and is intimately associated with the pituitary and a network of visceral control structures
in the brain including: amygdala, preoptic area, nuc. solitary tract, and autonomic preganglionic motor nuclei.
Function of thalamus
relay center to cortex
location and function of Brodmann area 1-3, associated gyri?
primary sensory, postcentral gyrus
location and function of Brodmann area 4, associated gyri?
primary motor, precentral gyrus
location and function of Brodmann area 17
primary visual
location and function of Brodmann area 41
primary auditory
Where does the dorsomedial thalamus project
frontal association cortex
where does the anterior nucleus of thalamus project
cingulate gyrus of cortex
where does the VA/VL of the thalamus project to?
motor cortex
where does the VPM/VPL of thalamus project to
somatosensory cortex
Where does the lateral geniculate nucleus of thalamus project to
visual cortex
where does the medial geniculate nucleus of thalamus project to
auditory cortex
where does the pulvinar of the thalamus project to
parieto-occiptal association cortex
where does the globus pallidus and cerebellum project to
thalamus (specific location?)
where does optic tract project to
LGN
where does inferior brachium project to
MGN
anterior and posterior locations of the internal capsule
Anteriorly, the internal capsule lies between the caudate nucleus and the lentiform nucleus; posteriorly, it lies
between the thalamus and lentiform nucleusAnteriorly, the internal capsule lies between the caudate nucleus and the lentiform nucleus; posteriorly, it lies
between the thalamus and lentiform nucleus
Where does internal capsule become corona radiata
In the cerebral hemispheres
Where does anterior internal capsule become posterior?
At interventricular foramen in anterior part of thalamus
How can you distinguish where the anterior and posterior limbs of internal capsule are?
The anterior limb is bordered by the caudate and putamen/globus pallidus and the posterior limb is bordered by the thalamus and putamen/globus pallidus.
List origin and destination for anterior limb of internal capsule
origin: anterior nucleus of thalamus, and DM nucleus. Destination: cingulate gyrus and prefrontal cortex respectively
List origin and destination for posterior limb of internal capsule
origin: motor cortex, VPL/VPM. Destination: spinal cord/brainstem and postcentral gyrus respectively
List origin and destination for retrolenticular limb of internal capsule
origin: Pulvinar and LGN. Destination: parietal association cortex and visual cortex respectively
List origin and destination for sublenticular limb of internal capsule
Origin: LGN and MGN. Destination: Visual cortex and auditory cortex respectively
Two major circuits of limbic system and functions
1) Amygdala-Hypothalamus-stria terminalis; this circuit is
related to emotions and homeostasis. 2) Papez circuit: hippocampus-mammillary bodies-anterior nuc. of thalamuscingulate gyrus-parahippocampal gyrus-hippocampus: this circuit is related to long term memory1) Amygdala-Hypothalamus-stria terminalis; this circuit is
related to emotions and homeostasis. 2) Papez circuit: hippocampus-mammillary bodies-anterior nuc. of thalamuscingulate gyrus-parahippocampal gyrus-hippocampus: this circuit is related to long term memory
inputs to amygdala
Direct from olfactory. Indirect from all other sensory modalities, especially visceral
