neurons, action potentials, and synapses

what are the functions of neurons

sensory input to integration to motor output

what is voltage

potential energy stored

what is current

flow of charge, release energy

is the Na+ and K+ pump passive or active

active

what are leak channels

K+ flows out

what are gated channels

require specific signals

what activate ligand channels

graded potentials

what activate voltage channels

action potentials

what are graded potentials

short distance, variable strength, open ligand

what are action potentials

action, long distance, constant strength, open voltage channels

action potential steps

resting state, depolarization, repolarization, hyperpolarization

what is propagation

sent down the whole axon as a wave

what are the saltatory conduction components

myelinated fibers, prevent Na+ leaking, separates ion attracting

presynaptic neuron

neuron impulse, Ca+ flows in, stimulate synaptic vesicles, neurotransmitter activated Na+ channel to open, post synaptic potential, nerve impulse

post synaptic options

esps, ipsp

epsp

make action potential more likely, depolarize

ipsp

makes ap less likely, hyperpolarize