Bone marrow is soft tissue found mainly inside the long bones,
vertebrae, and pelvic bones of the body. It is made up of red marrow, which
produces red and white blood cells and platelets, and yellow marrow, which
contains fat and connective tissue.
People are born with only red bone marrow. As a person matures, the
red marrow in many of the bones is replaced by yellow marrow. By adulthood,
only about half of the bone marrow is red. Red bone marrow is found mostly in
the ribs, breastbone, shoulder blades, collarbones, hip bones, skull, and
E. Gregory Thompson, MD - Internal Medicine & Brian Leber, MDCM, FRCPC - Hematology
PeaceHealth endeavors to provide comprehensive health care information, however some topics in this database describe services and procedures not offered by our providers or within our facilities because they do not comply with, nor are they condoned by, the ethics policies of our organization.