ZIMSEC A-Level Biology
8.12.2Action potential
Action potential in ZIMSEC A-Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic41 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 8.12.2.1Describe the resting potential and the generation of an action potential.
- 8.12.2.2Explain the transmission of an action potential along a myelinated neurone, emphasising sodium and potassium ions.
- 8.12.2.3Explain the importance of the myelin sheath (saltatory conduction) and the refractory period in determining the speed of transmission.
Lessons
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Receptors, resting potential and the action potential
35 min
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Transmission of nerve impulses along axons
30 min
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Sample question
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