Sliding Filament Theory of Muscle Contraction — NEET Biology
📚 Practice ConceptDefine sliding filament theory of muscle contraction.
Which of the following statements are correct regarding the changes occurring in a sarcomere during muscle contraction according to the sliding filament theory? S1. The I-band decreases in length as thin filaments slide over thick filaments. S2. The length of the A-band decreases due to shortening of thick filaments. S3. The H-zone becomes narrower or disappears during contraction. S4. The Z-lines move closer to each other, resulting in shortening of the sarcomere. S5. Thick filaments actively move towards the Z-lines during contraction. Select the correct option:
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.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.