Question

1. the medullary cavity of a long bone is located inside the

a. distal epiphysis.
b. diaphysis.
c. proximal epiphysis.
d. articular cartilage.

Explanation:

To solve this, we recall the anatomy of a long bone. The diaphysis is the shaft of the long bone, and it contains the medullary cavity (which holds bone marrow). The distal and proximal epiphyses are the ends of the long bone, and articular cartilage covers the ends for joint movement, not containing the medullary cavity.

Answer:

b. Diaphysis.