GENERAL HISTOLOGY

Detailed explanation-1: -The soft, spongy tissue that has many blood vessels and is found in the center of most bones. There are two types of bone marrow: red and yellow. Red bone marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets.

Detailed explanation-2: -Bone is made up of compact tissue (the hard, outer layer) and cancellous tissue (the spongy, inner layer that contains red marrow).

Detailed explanation-3: -White blood cells. Bone marrow produces many types of white blood cells. These are necessary for a healthy immune system. They prevent and fight infections. The main types of white blood cells, or leukocytes, are as follows.

Detailed explanation-4: -Yellow bone marrow This type of bone marrow can be found in the medullary cavity in the shaft of long bones and is often surrounded by a layer of red bone marrow. Yellow bone marrow contains mesenchymal stem cells (marrow stromal cells), which produce cartilage, fat and bone.