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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Magnitude of action potential in neuron, is determined by:
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The correct answer is  Ans: A (Na+) Ref: Pal GK. Nerve. In: Textbook of Medical Physiology. Ahuja Publishing House. 2007; 18: 158.Explanation:Depolarization (upstroke) phase of action potential in a neuron is due to Na+ influxRepolarization is due to K+ effluxMg2+, Ca2+ are not directly involved in generation of action potential in nerve