PSYCH 202 Lecture Notes - Lecture 1: Schwann Cell, Classification Chart, Chemical Synapse
Document Summary
4/11/17 lecture: neurons and glia (pg 64-75 sections: glia and neurons neuron classification chart) Two types of cell the nervous system is made up of. Glia: cells in the nervous system that support activities of neuron. First 3 are types of macroglia cells: microglia: tiny, mobile glial cells that migrate to areas of damage and digest debris. *describe the structure and function of each type of glia: astrocyte: structural and nutritional support for neurons (cns) Participation in chemical signaling: oligodendrocyte: myelination of axons (cns, schwann cell: myelination of axons (pns, microglia: debris cleanup (cns) Source: oligodendrocytes form myelin in the cns, schwann cells supply myelin for pns. Function: allows human axons to be smaller in diameter without sacrificing transmission speed, reduces energy requirements of neurons by decreasing amount of work done by sodium-potassium pumps. The uncovered section of axon membrane between two adjacent segments of myelin.
