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BIO NMDCAT Neurons
nmdcat.online July 7, 2026

An inhibitory postsynaptic potential (IPSP) typically involves the opening of

A. Sodium channels
B. Calcium channels
C. Chloride or potassium channels
✓
D. Proton channels

📝 Explanation

Opening Cl⁻ channels (allowing Cl⁻ influx) or K⁺ channels (allowing K⁺ efflux) leads to hyperpolarization, moving the membrane potential further away from the threshold and inhibiting the neuron.

📖 Additional Information

  • Sodium channels
  • Calcium channels
  • Chloride or potassium channels
  • Proton channels

Opening Cl⁻ channels (allowing Cl⁻ influx) or K⁺ channels (allowing K⁺ efflux) leads to hyperpolarization, moving the membrane potential further away from the threshold and inhibiting the neuron.

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