Medicneet Logo
Class 11 · Neural Control and Coordination

Role of Sodium Ions in Action Potential — NEET Biology

📚 Practice Concept
📖 NCERT Source

Explain the role of Na+ in the generation of action potential.

NCERT Biology · Class 11 · Chapter 18 · Paragraph 26
Practice This Concept
QuestionPractice Question

Assertion (A): Action potential generation involves polarity reversal at the stimulated site. Reason (R): Stimulus makes the membrane freely permeable to Na+, leading to rapid Na+ influx and reversal of polarity.

Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.

88/90
of the NEET 2026 Biology paper matched from the MedicNEET question bank

MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.

88 of 90 NEET 2026 Biology questions traced to MedicNEET10,000+ Biology questionsHindi + English
Download MedicNEET — FreeTry Web Version →
Free to start · Hindi + English · 10,000+ questions · NEET 2026 pattern
Related Concepts from Neural Control and Coordination
NEET 2024The hindbrain comprises pons, cerebellum and medulla (also called the medulla ob…View concept →NEET 2024The forebrain consists of cerebrum, thalamus and hypothalamus. Cerebrum forms th…View concept →NEET 2017The released neurotransmitters bind to their specific receptors, present on the …View concept →
📘Practice all 11 NEET PYQs from Neural Control and Coordination→🔍See full Neural Control and Coordination PYQ Analysis→