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Diencephalon
-Central core of the forebrain
-Consist of three paired structures
-Encloses the third ventricle
Diencephalon consist of...
-Thalamus
-Hypothalamus
-Epithalamus
Thalamus (description)
·Paired of egg-shaped masses that form the superolateral walls of the third ventricle
·Connect at the midline by the intermediate mass
·Contains four groups of nuclei (anterior, ventral, dorsal, and posterior)
·Nuclei project and receive fibers from the cerebral cortex
Thalamic Function
·Sensual afferent impulses converge and synapse in the thalamus
·Impulses of similar function are sorted out, edited, and relayed as a group
·All inputs ascending to the cerebral cortex pass through the thalamus
·Mediates sensation, motor activities, cortical arousal, learning, and memory
Hypothalamus (description)
-Located below the thalamus, it caps the brainstem and forms the inferolateral walls of the third ventricle
- Where the mammillary bodies, infundibulum, and the pituitary gland are found
Mamillary Bodies (description)
-Small, paired nuclei bulging anteriorly from the hypothalamus
-Relay station for olfactory pathways
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