PSL300H1 Chapter Notes - Chapter (All required for MIDTERM 2 and FINAL EXAM): Anterior Chamber Of Eyeball, Ciliary Muscle, Referred Pain

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12 Dec 2016
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The cns is divided into gray matter and white matter (p. 293) Cns is composed of neurons and supportive glial cells: interneurons are those neurons completely contained in cns, sensory (afferent) and efferent neurons link interneurons to peripheral receptors/effectors. Gray matter: unmyelinated nerve cell bodies, dendrites, axon terminals: cell bodies assembled in organized fashion clustered acc to function, nuclei: clusters of cell bodies in cns. Identified by specific names such as lateral geniculate nucleus visual info processing. White matter: mostly myelinated axons and very few cell bodies: tracts: bundles of axons connecting regions of cns. Consistency is soft and jellylike: individual neurons and glial cells are have highly organized internal cytoskels, ecm is minimal, they must rely on external support for protection for trauma, despite cytoskel. This is in form of bone, connective tissue membrane, and fluid. Neural tissue has special metabolic requirements (p. 297-308)

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