HTHSCI 1CC6 Lecture Notes - Lecture 21: Metencephalon, Vascular Permeability, Schwann Cell
25 Oct 2018
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Pns neuroglia satellite cells: surround neuron cell bodies located in pns, they support and brace neurons and anchor them to nutrient supply lines, determine capillary permeability, control chemical environment around neurons. Schwann cells: surrounds all nerve fibers in the pns and form myelin sheaths around the thicker nerve fibers, vital to regeneration of damaged peripheral nerve fibers. Classifications of neurons: multipolar neurons: have three or more processes- one axon and the rest dendrites. Major type in the cns: bipolar neurons: have two processes- an axon and a dendrite- that extend from opposite sides of the cell body. Rare and found in some special senses (retina: unipolar neurons: have a single short process that emerges from the cell body and dives t- like into proximal and distal branches. The more distal peripheral process is often associated with a sensory receptor. Distributing prohibited | downloaded by arsen terzian (arsen98@gmail. com: cns structures and brief functions such as cerebrum, diencephalon, brainstem, and cerebellum.
