The correct answer to this question is bone marrow. This marrow is a spongy tissue. It is found in many bones in the body like the thigh and hip bones. There are 200 billion new red blood cells produced every day thanks to bone marrow. Bone marrows contain two types of stem cells, which are hematopoietic and mesenchymal. There are two different types of bone marrow.
There is myeloid tissue, which is red bone marrow and produces blood. Then, there is fatty tissue, which is a yellow bone marrow that produces fat. Both the red and yellow bone marrow have capillaries and blood vessels.
Bone marrow is the portion of the bone where blood cells are made. It is a semi-solid tissue, which is found within the spongy part of the bones. Human marrow produces billions of blood cells per day, and it is characteristically red or yellow. The primary function of bone marrow is to mature and alter calls into the blood and lymphoid cells.
The heart contains three classes of blood cells, which include white blood cells, red blood cells, and platelets. Bone marrow transplants can be done to treat a wide variety of diseases, including certain forms of cancer, such as leukemia. Even though there is such a small percentage of bone marrow in humans at about 4% of the total body mass, its’ existence is significant in helping your immune system working correctly.