Anatomy & Physiology Question #8


The nurse is reviewing the structure of intermediate filaments which are the primary components of the cytoskeleton that give the cells strength, rigidity, and anchor organelles. What is the average diameter of these filaments?


  1. 8 to 10 mm
    • Rationale:
  2. 8 to 10 nm
    • Rationale:
  3. 8 to 11 nm
    • Rationale:
  4. 8 to 11 mm
    • Rationale:



The correct answer is B. Intermediate filaments are a type of cytoskeletal element made of multiple strands of fibrous proteins wound together. As their name suggests, intermediate filaments have an average diameter of 8 to 10 nm. 8 to 11 nm for nanometers and mm for mili-meters would not be accurate and is therefore incorrect.

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