PHGY 314 Lecture 1: PHGY314 Chacron 1 and textbook supplements
8 Dec 2016
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Chapter 17 + lecture 1: anatomical organization of the cns. 3 major axes and their corresponding cuts/planes: rostral caudal, coronal plane, dorsal ventral, horizontal plane, lateral medial lateral, sagittal plane. Early relay nuclei involved in taste, hearing, balance, neck/facial muscles. Ventral: contain pontine nuclei, relays movement and sensation from cerebral cortex to cerebellum. Links parts of the motor systems (cerebellum, basal ganglia, hemispheres) Contains substantia nigra nuclei, which inputs to basal ganglia to regulate voluntary movements. Auditory/visual systems + eye movements: cerebellum. Densest in neurons of all parts of the brain. Posture, fine motor skills + motor learning. Takes somatosensory from spinal cord, motor from cerebral cortex, balance from vestibular organs. Takes inputs from sensory association regions of neocortex: diencephalon. Relays/modulates sensory info from peripheral to cortex. So it decides if the sensory information will reach the consciousness of the cortex or not. 6 layer organization, differently from 6-layer neocortex. So it controls homeostasis, bodily functions, reproduction.
