HTHSCI 1H06 Chapter Notes -Non-Rapid Eye Movement Sleep, Prefrontal Cortex, Taste
29 Sep 2013
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Document Summary
Forms central core of brain tissue superior to midbrain. Contains nuclei involved in sensory and motor processing between higher and lower brain centers. Extends from brain stem to cerebrum and surrounds third ventricle; includes thalamus, hypothalamus, and epithalamus. Makes up 80% of diencephalon, consists of paired oval masses of gray matter organized into nuclei with interspersed tracts of white matter. Intermediate mass joins right and left halves of thalamus in 70% of brains. Internal capsule thick band of white matter lateral to thalamus. Thalamus is major relay station for most sensory impulses that reach primary sensory areas of cerebral cortex from spinal cord and brain stem. Contributes to motor functions by transmitting info from cerebellum and basal nuclei to primary motor area of cerebral cortex. Relays nerve impulses between cerebrum areas and in maintenance of consciousness. Controls and integrates ans activities including contraction of smooth and cardiac muscle and secretion of glands. Regulation of emotional and behavioural patterns (rage, aggression)
