What is bone marrow?

  • (noun): The fatty network of connective tissue that fills the cavities of bones.
    Synonyms: marrow
    See also — Additional definitions below

Bone Marrow

Bone marrow is the flexible tissue found in the interior of bones. In humans, red blood cells are produced in the heads of long bones, in a process known as hematopoesis. On average, bone marrow constitutes 4% of the total body mass of humans; in an adult weighing 65 kilograms (140 lb), bone marrow accounts for approximately 2.6 kilograms (5.7 lb). The hematopoietic compartment of bone marrow produces approximately 500 billion blood cells per day, which use the bone marrow vasculature as a conduit to the body's systemic circulation. Bone marrow is also a key component of the lymphatic system, producing the lymphocytes that support the body's immune system.

Read more about Bone Marrow.

Some articles on bone marrow:

Sickle-cell Disease - Management - Bone Marrow Transplants
... Bone marrow transplants have proven to be effective in children ... Bone marrow transplants are the only known cure for SCD ...
Bone Marrow in Cuisine
... Many cultures have used bone marrow as food throughout history ... Marrow would have been a useful food source (largely due to its fat content) for tool-using hominids, who were able to crack open the bones of ... diners in the 18th century often used a marrow scoop (or marrow spoon), often of silver and with a long, thin bowl, as a table implement for removing marrow from a ...
Syngeneic Bone Marrow Transplantation
... Syngeneic bone marrow transplantation is a procedure in which a person receives bone marrow donated by his or her healthy identical twin ...
Copper Deficiency - Symptoms - Hematological Presentation
... Many times during a bone marrow biopsy, decreased granulocyte (which are granulated white blood cells including neutrophils, eosinophils, and basophils) maturation, vacuolization of red blood cell precursors ... These bone marrow findings can lead to a diagnosis of myelodysplasia ... unnecessary painful surgery, such as the bone marrow biopsy ...
Mercy Falls - Plot / Story
... Back in the physical world, the father of the man signs a form to allow the man's son to donate bone marrow, in desperate attempts to heal him ... The storm, of course, is the doctors trying to cure the man using the bone marrow, therefore trying to destroy Mercy Falls.) The townspeople unite and build up defenses against the storm ... This explains why the bone marrow transplant from his son was unsuccessful ...

More definitions of "bone marrow":

  • (noun): Very tender and very nutritious tissue from marrowbones.
    Synonyms: marrow

Famous quotes containing the words marrow and/or bone:

    Oh literature, oh the glorious Art, how it preys upon the marrow in our bones. It scoops the stuffing out of us, and chucks us aside. Alas!
    —D.H. (David Herbert)

    Sang a bone upon the shore;
    “A man if I but held him so
    When my body was alive
    Found all the pleasure that life gave”:
    A bone wave-whitened and dried in the wind.
    William Butler Yeats (1865–1939)