BIOL301 Lecture Notes - Lecture 8: Lateral Funiculus, Commissure, Central Canal
19 Apr 2018
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Document Summary
Three functions: monitoring changes of outside and inside through sensory receptors, process and interpretation of the sensory signals integration, effector organ response usually response through motor organs. Cns: brain and spine integration and command centre. Pns: outside cns, consists of cranial nerves and spinal nerves that stem from the spine and the cranium. These nerves act as links of the body to cns. (here it is ganglia clusters of cell bodies). Important terminology: bundle of fibers in pns nerves / cns tract, collection of cell bodies in pns ganglia / cns nuclei. Nerve is a bundle of fibers (pns) Gray matter neuronal cell bodies, dendrites, and unmyelinated axons: surrounds central cavity of the spine, h shaped region, surrounds white matter in cerebral cortex and cerebellum. White matter myelinated axons: external to the gray matter, made up of axons (nerve fibers) passing between regions of pns. Begins at foramen magnum and is a continuation of the brain stem.
