Asked in PMC Practice Test 36 (2021) 2021Moderate

If the cross-bridges bind to actin, they will pivot in such a way as to cause the actin filaments to slide. This pivoting action causes the actin filaments to slide _.

Correct answer: A. Closer together

  • A. Closer together
  • B. Farther apart
  • C. Towards the Z-line
  • D. Both Options B and C are correct

Explanation

When the cross‐bridges bind to actin, they will pivot in such a manner to cause the actin filaments to slide closer together.

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