what is bone marrow ?
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Answer:
Bone marrow is a semi-solid tissue found within the spongy or cancellous portions of bones.[2] In birds and mammals, bone marrow is the primary site of new blood cell production or haematopoiesis.[3] 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.[4] Bone marrow comprises approximately 5% of total body mass in healthy adult humans, such that a man weighing 73 kg (161 lbs) will have around 3.65 kg (8 lbs) of bone marrow
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Answer:
Bone marrow is a semi solid tissue present inside the portions of bone. Bone marrow is soft tissue that fills the center of bones. In humans it is located in ribs, vertebral column, sternum, and pelvis bones. Bone marrow contains immature cells, in other words we could state that as stem cells.
Bone marrow can produce 200billion new red blood cells everyday, along with white blood cells. Many people with blood cancers, sickle cell anemia and other life threatening, rely on bone marrow transplants to survive.
Healthy bone marrow and blood cells are very much important for a healthy life.