What type of ions are present in high concentration inside the axon when a neuron is resting?

What type of ions are present in high concentration inside the axon when a neuron is resting?
  1. Sodium ions
  2. Potassium ions
  3. Negatively charged proteins
  4. All of the above

Solution

When a neuron is resting, the axonal membrane is comparatively more permeable to potassium ions and nearly impermeable to sodium ions. The axoplasm inside the axon contains high concentration of K⁺ and negatively charged proteins and low concentration of Na⁺.

Asked in: NCERT

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