PSYCH 2010 Study Guide - Midterm Guide: Autonomic Nervous System, Somatic Nervous System, Peripheral Nervous System
25 Sep 2016
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Document Summary
Glia: cells that provide various types of support for neurons. Functions: nourishment, removal of waste products, insulation around axon. Different views of the glia cell over time: 1) glia modulate the signal of neurons. Dampen or amplify synaptic activity: 2) primary role=shield synapses from surrounding neuronal activity. Enhance signal to noise ratio in nervous system: 3) play role in major disorders. Axon: long fiber that transmits signals away from the soma to other neurons or to muscles or glands. May branch off to communicate w/ a number of other cells. Dendrites: part of neuron that are specialized to receive information tree-like. Neurons have extensive dendrites like one way telephone wires: receive information from other cells. Myelin sheath: insulating material that encases some axons speed transmission of signal stabilize axon structure and neural connectivity network. Neurons: individual cells in the nervous system that receive, integrate and transmit information. Basic link of communication in nervous system.
