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NEET UG BIOLOGY MCQ: NEURAL CONTROL AND COORDINATION
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An action potential in the nerve fibre is produced when positive and negative charges on outside and the inside of the axon membrane are reversed because
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Correct option: B
More sodium ions enter the axon as compared to potassium ions leaving it
Option B is correct because an action potential is generated by the influx of sodium ions into the axon, leading to depolarization.
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I. It screens sensory information
II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
IV. It is the seat of learning, memory, reasoning and creative ability Which of the following neuron is also called excitor neuron?