Question

Below the skin are "stem cells" that divide, with some cells continuing the stem cell line and others being pushed toward the surface to flatten and die and be sloughed off. In the bone marrow other stem cells produce erythrocytes that lose their nucleus and function for a few months in the bloodstream before they too die. Such "dead end" cells that reproduce no further

Answer 1

The subject of this question is Biology, and it is about the process of hemopoiesis in the bone marrow. Stem cells in the bone marrow generate different types of blood cells, including erythrocytes, platelets, and leukocytes. These cells have different functions and lifespans.

Step-by-step explanation:

The subject of this question is Biology.

The process described in the question is called hemopoiesis, which is the production of the formed elements of the blood. Stem cells in the bone marrow generate erythrocytes (red blood cells) that eventually lose their nucleus and function for a few months before being replaced. These cells are terminally differentiated, meaning they do not divide and reproduce further.

Other types of cells derived from stem cells in the bone marrow include megakaryocytes, which produce platelets, and various types of leukocytes (white blood cells).