Bone marrow is the soft tissue in which blood cells are produced. Which term refers to this tissue?

Bone marrow is the soft tissue in which blood cells are produced. Which term refers to this tissue?

• A. Bone Marrow
• B. Endosteum
• C. Periosteum
• D. Cartilage

Answer: (A)

Blood cell formation, or hematopoiesis, happens in the soft tissue inside bones known as bone marrow. This tissue fills the medullary cavities and contains stem cells that become red blood cells, white blood cells, and platelets. The term for this tissue is bone marrow. The inner lining of bone is called the endosteum, the outer covering is the periosteum, and cartilage is a different connective tissue found in joints and elsewhere—none of these describe the tissue where blood cells are produced.

Blood cell formation, or hematopoiesis, happens in the soft tissue inside bones known as bone marrow. This tissue fills the medullary cavities and contains stem cells that become red blood cells, white blood cells, and platelets. The term for this tissue is bone marrow. The inner lining of bone is called the endosteum, the outer covering is the periosteum, and cartilage is a different connective tissue found in joints and elsewhere—none of these describe the tissue where blood cells are produced.