KINE 2031 Lecture : Nervous System Lecture Notes Clear and concise notes taken during lecture. (Received an A+)
16 Oct 2011
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Organized into central nervous system (brain and spinal cord) and peripheral nervous system (everything else) Comprised of sympathetic (fight or flight) and parasympathetic (rest and digest) Dendrites are extension of the cytoplasm that direct information toward the cell body. Axons are extensions of cytoplasm that direct information away from the cell body. Unipolar and bipolar neurons are sensory, multipolar are motor. Astrocytes are positioned between the capillary and the neuron and regulate what substances come in contact with the neuron, they also act as the glue that binds the cns. Oligodendrocytes are responsible for the myelination of axons. Microglial cells destroys viruses and bacteria that have invaded the cns. Ependymal cells line the ventricles (holes) of the brain and are responsible for the production of cerebrospinal fluid. Neurolemmocyte (schwann) cells are responsible for the formation of myelin around axons in the pns. Satellite cells surround the cell body and act as protection.
