neuronal communication

Question 1

generator potential

Answer 1

the influx of sodium ions establishes an electrical potential difference across the membrane of the axon.

Question 2

saltatory conduction

Answer 2

large local currents are set up between nodes of ranvier allowing action potential to jump from node to node

Question 3

resting potential

Answer 3

negative inside, positive outside

Question 4

how inhibitory neurotransmitters work

Answer 4

inhibitory neurotransmitter prevents the generation of an action potential in the post-synaptic neurone due to the hyperpolarisation of the membrane. This means that the membrane potential becomes more negative, which is the opposite of what happens during depolarisation.

Question 5

draw each neurone

Answer 5

B-motor neurone
C-relay neurone
D- Sensory neurone