The Medullary Cavity in Most Adults is Filled With

Question

The medullary cavity in most adults is filled with
A) red bone marrow.
B) yellow bone marrow.
C) spongy bone.
D) the endosteum.

Accepted Answer

In most adults, the medullary cavity is filled with yellow bone marrow. Red bone marrow, which produces blood cells, is primarily found in the spongy bone of certain bones such as the pelvis, femur, and sternum during adulthood.