Practice question

MCQ

Question

Which of the following statements about action potentials is incorrect?

Options

Choose one · Correct answer highlighted

Action potentials occur due to ion movement across the neuron's membrane. Sodium (Na⁺) ions enter the neuron during depolarization. Potassium (K⁺) ions leave the neuron during repolarization. Action potentials can travel in both directions along an axon. Correct

Explanation

Action potentials travel in only one direction due to the refractory period, which prevents backflow. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

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Zoology 06 Sep 2026

Practice question

Which of the following statements about action potentials is incorrect?

Options

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