BIOL 469 Chapter 2: Nerve Cells, Neural Circuitry and Behavior part 1
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Document Summary
The mechanisms by which neurons produce signals within and between nerve cells. The patterns of connections between nerve cells and nerve cells between their targets: muscles and gland effectors. Relationship of diff patterns of interconnection to diff types of behavior. How neurons and their connections are modified by experience. 2 main classes of cells in nervous system. Cell body contains nucleus and gives rise to 2 types of cell processes: axons and dendrites (cid:12254) Many of them are insulated by a sheath of fatty myelin that is regulated interrupted at gaps called, nodes of ranvier. Action potential is initiated at the initial segment of the axon and propagates to the synapses (cid:12254) Where signals flow from one neuron to another. Branches of axon of presynaptic - transmits signals to postsynaptic cell. Apical and basal dendrites = input elements of the neuron, receiving signals from other neurons. Soma is the metabolic center of the cell containing; nucleus -
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