End of Topic Test - Neurones & Action Potentials

Test yourself on End of Topic Test - Neurones & Action Potentials

• What type of cells form the myelin sheath when wrapped around the axon of the neurone?

• What is the approximate value of the resting potential of a neurone?

• When a neurone is stimulated, the Na⁺ ion channels in the cell membrane open, and Na⁺ ions flood into the neurone. What effect does this have on the membrane potential?

• In how many directions can a wave of depolarisation travel in?

• Which of the following is NOT a factor that can speed up the transmission of nerve impulses?