ANP 1106 Chapter Notes -Sleep Spindle, Chemical Synapse, Circadian Rhythm

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Jacqueline Carnegie

Document Summary

Functional brain systems are networks of neurons that work together but span relatively large distances in the brain and cannot be localized to specific brain regions. I. e. : the limbic system and the reticular formation. Includes the rhinencephalon (septal nuclei, cingulate gyrus, parahippocampal gyrus, dentate gyrus, and hippocampus) and the amygdala. The amygdala recognizes angry or fearful facia expressions, assesses danger, and elicits a fear response. The cingulate gyrus is involved in expressing emotions through gestures and in resolving mental conflicts when we are frustrated. Extends through the central core of the medulla oblongata, pons, and midbrain (brainstem) Composed from 3 broad columns along the length of the brain stem: the midline raphe nuclei, medial (large cell) group of nuclei, lateral (small cell) group of nuclei. Individual reticular neurons project to the hypothalamus, thalamus, cerebral cortex, cerebellum, and the spinal cord. The reticular formation is ideal for governing the arousal of the brain as a a whole.