GENERAL KNOWLEDGE

Detailed explanation-1: -Bone marrow is where blood cells are made. The three different types of blood cell made by bone marrow include: Red blood cells – carry oxygen around the body. White blood cells – make up the body’s immune system.

Detailed explanation-2: -Spongy bone is found mostly at the ends of bones and contains red marrow. Bone marrow is found in the center of most bones and has many blood vessels. There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets.