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10 Cards in this Set
- Front
- Back
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what is synapse
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space between a neurons axon and its target. also called synaptic cleft
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what are the 3 structures of neurons
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sensory, motor, and interneuron
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the impulse travels from the _________ to the ___ ______??
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dendrites to end plates
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a mylin sheath is??
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formed by the schwann cells and insulates the axons. this speeds up the transmission but is found only the PNS
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all pathways must include three things???
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reception, transmission, and processing,
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what is the all or none theory??
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the nueron either responds fully or not at all
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CNS stands for???
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central nervous system
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what happens in the depolarizing phase??
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neuron is stimulated enough to cause Na+ gates to open causes an in-rush of Na+.
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summation is?
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the sum effect of all neurontransmitters acting on an neuron.
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why does the brain react so much slower when u get hurt(ex: u say ouch after u pull away??)
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the reflex arc sends the message to your spinal cord and back to your arm before it is sent to your brain to say ouch.
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