Q151 / 180 · NEET 2015 (Phase 1) · Zoology

Sliding filament theory can be best explained as:

  • A
    When myofilaments slide pass each other actin filaments shorten while myosin filament do not shorten.
  • B
    Actin and myosin filaments shorten and slide pass each other.
  • Correct answer
    C
    Actin and myosin filaments do not shorten, rather slide pass each other.
  • D
    When myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten.

Solution

In the sliding filament model, the thick and thin filaments past each other, shortening the sarcomere, i.e., actin and myosin filaments do not shorten, rather actin filaments slide over myosin filaments.

Hence, the correct answer is option: 'C'.

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