Anatomy & Physiology Musculoskeletal #6

Question

Which layer of bone contains the bone marrow?

Answers

  1. Periosteum
    • Rationale:

      The periosteum is the outer layer of all bones with the exception of the long bones. This is not the layer where bone marrow is stored.

  2. Endosteum
    • Rationale:

      The endosteum is the lining around the innermost layer of the bone. It is not the layer where bone marrow is stored.

  3. Osteogenic cells
    • Rationale:

      The osteogenic bone cell is not a layer of the bones. Osteogenic cells is another term for bone marrow.

  4. Medullary cavity
    • Rationale:

      The medullary cavity is the innermost layer of the bones. It is the location where bone marrow is stored.

Overview

The skeletal bones can be categorized and classified in several ways.

Explanation

Learning Outcomes

Bones typically have three layers: the periosteum, the endosteum, and the medullary cavity. The medullary cavity is the innermost part of the bone. Its primary function is the storage of bone marrow.

Test Taking Tip

Consider the structure and function of the layers of bones to correctly answer this question.

Video Rationale