PATHOLOGY

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: -Blood cells are made in the bone marrow. The bone marrow is the spongy material in the center of the bones that makes all types of blood cells.

Detailed explanation-3: -White blood cells are produced by bone marrow and their levels of production are regulated by organs such as the spleen, liver, and kidneys. Granulocytes and agranulocytes are the two types of white blood cells or leukocytes. Granulocytes contain granules or sacs in their cytoplasm and agranulocytes do not.