Skip to Content
Home > Wellness > Health Library > Bone Marrow
Browse and register for related classes.
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
Current as of:
April 28, 2016
E. Gregory Thompson, MD - Internal Medicine & Brian Leber, MDCM, FRCPC - Hematology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
250 Pleasant Street
Concord, NH 03301
Contact Concord Hospital
View Quality Data
© 2016 Concord Hospital