Bone marrow Bone marrow Bone marrow is a semi-solid tissue which may be found within the spongy or cancellous portions of bones. In birds and mammals, bone marrow is the primary site of new blood cell production or hematopoiesis. It is composed of hematopoietic cells, marrow adipose tissue, and supportive stromal cells. In adult humans, bone marrow is primarily located in the ribs, vertebrae, sternum, and bones of the pelvis. On average, bone marrow constitutes 4% of the total body mass of humans; in an adult having 65 kilograms of mass (143 lb), bone marrow typically accounts for approximately . Human marrow
Down Where the Spirit Meets the Bone are fully aware of wounds and pitfalls, but they’re more likely to be looking back or looking outward." Tom Moon writes at NPR, "She's always been able to conjure brokenhearted misery from a single note; now, she can ramp up to fury that quickly, too. And resignation. And let's face it: In terms of pure expression, no singer in popular music can touch Williams when she's calling from the lonely outskirts of Despairville. She sounds like it's her permanent residence, that place down deep where the spirit meets the bone." The album debuted on the Billboard 200 at number 13