Smooth Muscle Histology · Histology

Which of the following describes the regenerative capacity of smooth muscle?

  1. It has no capacity for regeneration at all
  2. It relies solely on satellite cells for repair
  3. It can regenerate by mitotic division of mature cells
  4. It is replaced exclusively by permanent fibrous scar tissue
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Correct answer: It can regenerate by mitotic division of mature cells

Smooth muscle has a much higher regenerative capacity than skeletal or cardiac muscle. Mature smooth muscle cells can re-enter the cell cycle and divide (hyperplasia) to replace damaged tissue or increase organ size.

Difficulty: Medium Question 17 of 20

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