Learning objective
Explain resting potential, action potential and nerve impulse transmission.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Flashcards
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Questions
Topic
Response and homeostasis official content
Subtopic
Nervous coordination
Study support
Understand this objective
Quick explanation
Explain resting potential, action potential and nerve impulse transmission
- This point belongs to Response and homeostasis official content, especially Nervous coordination.
- You need to be able to explain resting potential, action potential and nerve impulse transmission.
- The key ideas to know are action potential.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Nervous coordination to exam-style questions, flashcards, and revision notes for Response and homeostasis official content.
Quick student answer
What is the primary ion responsible for establishing the resting potential of a neuron?
Direct answer
Potassium (K+) is the primary ion that contributes to the resting potential of a neuron.
Key terms
- Depolarization: The process during which the membrane potential becomes less negative (more positive) due to the influx of sodium ions.
- Repolarization: The process of restoring the membrane potential to its resting state after depolarization, primarily through the efflux of potassium ions.
Common trap
Confusing Resting Potential with Action Potential: Remember that resting potential is a stable state, while action potential is a transient event characterized by rapid changes in membrane potential.
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Flashcard prompts
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Revision tools
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Explain why organisms detect internal and external stimuli.
Stimuli, both internal and external, are detected and lead to a response
- Link stimulus detection to responses that increase survival.
Stimuli, both internal and external, are detected and lead to a response
- Distinguish internal and external environmental changes.
Stimuli, both internal and external, are detected and lead to a response
- Relate coordination systems to organism responses.
Stimuli, both internal and external, are detected and lead to a response
- Explain how receptors convert stimuli into nervous impulses.
Nervous coordination