AP Psych-Synapse/Neurotransmission

synapase/synaptic cleft

gap between two neurons in which a neural impulse may pass

receptor site

place where NT’s bind on postsynaptic neuron, located at the dendrite

vesicles

where neurotransmitters are housed in terminal buttons

reuptake

when NT’s are reabsorbed back into the cell that previously released it 

Action Potential

Brief neural impulse down an axon after threshold is reached

resting neuron

neuron that is not receiving any charge (-70mv of neuron)

depolarization of the neuron?

if the neuron becomes more positive than the resting potential 

Threshold 

level of stimulation needed (-55mv) to trigger an impulse down an axon during depolarization phase

All or Nothing

neuron’s reaction to either firing or not

repolarization

the cell experience a decrease of voltage due to potassium increase