Action Potential 0.0 / 5 ? BiologyAction PotentialA2/A-levelOCR Created by: Hannah BickerstaffCreated on: 13-09-13 09:33 48763215 Across 1. Achieved when the membrane is depolarised to a value of about +40mV (6, 9) 5. What potential is a small depolarisation caused by sodium ions entering the cell? (9) 8. After each action potential it is impossible to stimulate the cell membrane to reach another action potential, what is this period known as? (10) Down 2. What happens when a membrane looses its resting potential? (11) 3. Term used to describe the movements of ions along the neurone. (5, 7) 4. What does a polarised membrane have across it? (9, 10) 6. What potential is a potential difference across the membrane of about -50mV? (9) 7. The condition of a membrane that is more highly polarised than the usual resting state. (14)
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