neurotransmitter and summation

Question 1

what is an excitatory neurotransmitter

Answer 1

depolarise the post synaptic membrane and fires and action potential if threashold is reached

Question 2

what is an inhibitory neurotransmitter

Answer 2

hyperpolarise the post synaptic membrane so that an action potential is not fired

Question 3

what happens if a single impulse is fired

Answer 3

it is too small to surpas the threashold so no actionpotential is produced in the post synaptic neurone

Question 4

what is summation

Answer 4

the total effect of the neurotranmitter released

Question 5

what is likely after summaion

Answer 5

that an action potential will be fired from the post synaptic neurone

Question 6

what is spatial summation

Answer 6

hwen two or more neurone release neurotransmitter which bind to one same post synaptic membrane

Question 7

the colective firing allows what

Answer 7

an action potential to be fired

Question 8

what is temporal summation

Answer 8

when two or more more nerve impulses are fired one after another from the same presynaptic neurone to the same post synaptic neurone

Question 9

why does it make action potential more likely

Answer 9

as more neurotramitters are released into the synapse cleft

Question 10

how are inhibitory neurotransmitter produced

Answer 10

presynaptic neurone releases nt which bind to the chlorine ion channels, causes them to open which causes an influx of chlorine ion and also open the potasium ion channels causing hyperpolarisation