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- 1. Multiple Choice
Which ions are involved in establishing the resting potential?
sodium ions
calcium ions
potassium ions
hydrogen ions
- 2. Multiple Choice
Which process(es) is(are) involved in establishing the resting potential?
diffusion
facilitated diffusion
active transport
osmosis
- 3. Multiple Choice
The inside of a neurone is negatively charged when at resting potential.
True
False
- 4. Multiple Choice
Which ions 'leak' out of neurones to establish resting potential?
sodium ions
potassium ions
hydrogen ions
chloride ions
- 5. Fill in the Blank
Which term is used to describe the change in the membrane potential to positive as sodium ions enter a neurone?
- 6. Multiple Choice
Which is true for repolarisation?
sodium channels open, potassium channels close
sodium channels open, potassium channels open
sodium channels close, potassium channels open
sodium channels close, potassium channels close
- 7. Multiple Choice
Which of the following increase the speed of transmission of a nerve impulse?
presence of myelin sheath
smaller diameter of axon
increased temperature
- 8. Multiple Choice
What has to be reached before a neurone can fully depolarise?
threshold potential
refractory period
hyperpolarisation
resting potential
- 9. Fill in the Blank
What value is the resting potential in mV (number and sign only)?
- 10. Multiple Choice
What is saltatory conduction?
when the threshold potential is reached
when the action potential jumps from node to node
when the neurone becomes hyperpolarised
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