EXS 320 Exam 3 Nervous System
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11 Terms
Afferent neurons
originate in the periphery of the body via a sensory or visceral receptor and travel towards CNS
Efferent neurons
originate in CNS and travel to periphery to produce an effect in the body
Interneurons
found in CNS, allow communication between afferent and efferent neurons
Excitable cells
cells that can produce electrical signals
Action potential
electrical signals produced by excitable cells
Neurons (nerve cells)
excitable cells in nervous system
Cell body
contains nucleus
Dendrites
receives information from other neurons or stimuli
Axon
sends impulse (action potential) away from cell body
Axon terminal
releases neurotransmitter
Depolarization
excitable cell’s membrane permeability is altered, membrane potential changes
