Blood cells are produced in

Answer 1

The production of blood cells is called hematopoeisis, and it is the process by which all the different blood cells are formed from a single kind of hematopoeitic stem cell. All of the body's blood cells start out in medullary portion of bone--the marrow--except in some fetal stages and in some disease states, where blood cells can be produced in the liver and spleen (this is called extramedullary hematopoeisis). Most of the cells produced in the bone marrow mature into their final forms in the bone marrow, but some white blood cells finish maturation in the thymus. The stem cells and their progeny (daughter cells) receive various stimuli in the form of chemicals that contact them that "push" them in the direction of forming whatever blood cells the body happens to need.

Answer 2

All blood cells are produced from a hemocytoblast stem cell in the bone marrow. A hormone called erythropoietin secreted from the kidneys causes those hemocytoblasts to differentiate into red blood cells. White blood cells are stimulated by substances known as colony stimulating factors are interleukins.

Answer 3

Good question, but red or white blood cells?

Answer 4

Bone marrow, which is part of the lymphatic system, is what produces blood cells.

Answer 5

Blood cells are produced in the bone marrow

Answer 6

Many types of blood cells are produced within the bone marrow. This gel-like substance is found within the bone.

Answer 7

Bone marrow