C2.2 Neural signalling Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. Which fibres are multiple and short?
- A. Axons
- B. Dendrites
- C. Nodes
- D. Synapses
2. HL: The rising phase of an action potential is caused by:
- A. K⁺ leaving
- B. Na⁺ entering
- C. The Na⁺/K⁺ pump
- D. Ca²⁺ leaving
3. HL: 15 action potentials are recorded in 0.1 s. The frequency is:
- A. 15 s⁻¹
- B. 1.5 s⁻¹
- C. 150 s⁻¹
- D. 1500 s⁻¹
4. HL: In saltatory conduction, action potentials occur at:
- A. Every point along the axon
- B. Nodes of Ranvier
- C. The myelin sheath
- D. The synaptic cleft
5. HL: An inhibitory postsynaptic potential makes the membrane:
- A. Depolarised
- B. Hyperpolarised
- C. Reach threshold
- D. Release calcium