transmission aross the synapse acetlycholine Flashcards
what is the neurotransmitter that the cholinergic synapse transports
acetylcholine
what does acetyloline do
connects motor neurons and skeletal muscle
what does the arrival of action potential cuase
calcium ion channels to open
when the calcium channels open what does this cause the calcium ions to do
ca ions enter synaptic knob
how do the ca+ ions enter synaptic knob
facilitated diffusion
what does the influx of calcium ion do
causes synaptic vesicles fuse with the membrane
what diffuses across the synaptic cleft
acetylcholine
when the acytlecholine diffuses across the synaptic cleft what happens
acetlycholine binds to the receptor sites
what does the binding to receptor sites cause
sodium ion protien channels to open
when sodium channels open what happens
na+ diffuses in rapidly
when the na+ diffuses in what does this create
creates a new action potential
where is the new action potential created
postsynaptic neuron
describe the total process
calcium ions move into presynaptic neurone via facilitated diffussion
ca+ than diffuses down to post synaptic knob where it causes vesicles to fuse with presynaptic membrane
actylcholine is released and diffuses across synaptic cleft
recived on post synaptic neurone by receptor cells
this stimulates sodium ion chanells to open - repid influx of sodium ions
creating a new action potential.