Periosteum · Histology

Which statement correctly compares the periosteum and the endosteum?

  1. The endosteum is much thicker than the periosteum.
  2. The periosteum lines the marrow cavity, while the endosteum covers the outside.
  3. Only the endosteum contains osteogenic cells.
  4. The periosteum is bilayered; the endosteum is usually one cell thick.
Show answer and explanation

Correct answer: The periosteum is bilayered; the endosteum is usually one cell thick.

The periosteum consists of an outer fibrous and an inner osteogenic layer. The endosteum is a much thinner, often single-layered membrane that lines the internal surfaces of bone, such as the medullary cavity and trabeculae.

Difficulty: Medium Question 10 of 20

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