What does “Sliding filament theory” actually mean in Locomotion & Movement, and why does it matter for NEET?
muscles contract when thin actin filaments slide over thick myosin filaments, shortening the muscle — powered by ATP and triggered by calcium.
In simple words: muscles contract when thin actin filaments slide over thick myosin filaments, shortening the muscle — powered by ATP and triggered by calcium. Getting Sliding filament theory clear matters because NEET questions on Locomotion & Movement usually test this idea directly, not just a formula you memorised.
Key point
Sliding filament theory
Common mistake
thinking the filaments themselves shrink.
Memory tip
the filaments don't shorten — they slide past each other.
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