EVERYDAY SCIENCE

Detailed explanation-1: -Red blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow are called hemocytoblasts. They give rise to all of the formed elements in blood. If a stem cell commits to becoming a cell called a proerythroblast, it will develop into a new red blood cell.

Detailed explanation-2: -Most blood cells are made in your bone marrow. This process is called haemopoiesis. In children, haemopoiesis takes place in the long bones, like the thighbone (femur).

Detailed explanation-3: -), are also produced in the lymph nodes and spleen, and T cells are produced and mature in the thymus gland.

Detailed explanation-4: -Red blood cells grow in your bone marrow. Bone marrow creates almost all of the cells in your body. Red blood cells contain a protein called hemoglobin, which is responsible for carrying oxygen.