What is the function a sponge material called red marrow?

Red marrow is a type of spongy tissue found mainly in the interior of certain bones, such as the pelvis, ribs, and vertebrae. Its primary function is hematopoiesis, the process of producing blood cells, including red blood cells, white blood cells, and platelets. This tissue plays a crucial role in the body's immune response and oxygen transport. Additionally, red marrow also helps in the regulation of the body's blood cell levels and overall health.