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11 Cards in this Set

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  • Back
Nerve structure
nerve, fascicles, nerve fiber (axon)
epineurium
membrane around whole nerve
perineurium
membrane around fascicles
endoneurium
membrane around each axon
relfex arc
neural pathway of a reflex, simplest kind, consists of 2 neurons, bypasses the brain
the reflex arc pathway
stimulated, dendrites of sensory neuron, axon of sensory neuron, synapse, dendrites motor neuron, axon motor neuron, synapse, effector organ, reflex
synapse
space between 2 neurons
effector organ
organ causing reflex action (muscles)
How impulses travel
Na+ channels open and Na+ rushes in, sodium leaves, channel closes, next one opens, goes through axon to synapse
neurotransmitter
casuses Na+ channels to open
salutatory conduction
when impulse encounters section covered in myelin & jumps over it.