Repolarization is restored when:
Correct answer: B. Potassium diffuses out
- A. Sodium ions diffuse in
- B. Potassium diffuses out
- C. Potassium diffuses in
- D. Sodium diffuses out
Explanation
Repolarization is restored when potassium ions diffuse out of the neuron, as they are more concentrated inside than outside. This outflow of potassium ions helps return the membrane potential to a negative value, restoring the resting membrane potential.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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