Hematopoietic stem cells (HSCs) are the blood cells that give rise to all the other blood cells and are derived from mesoderm. They are located in the red bone marrow, which is contained in the core of most bones.
12. Define the term hematopoiesis and name the major skeletal locations where it occurs. Hematopoiesis is blood cell formation that occurs in the red bone marrow in the spongy bone of flat bones and epiphyses of long bones. 13. Name the important function that the trabeculae in spongy or cancellous bones allow for. hematopoiesis. 14. Define the term ossification. ossification is bone formation. The skull protects the brain. movement. Skeletal muscles attached to bones by tendons. hematopoiesis. Definition = Blood Cell Formation; All blood cells are formed in the red marrow of certain bones. mineral store. Bone stores many minerals, calcium, phosphorous, and others. Definition of HEMATOPOIETIC SYSTEM. : an organic system of the body consisting of the blood and the structures that function in its production. ADVERTISEMENT. International Scientific Vocabulary hemat- + -poietic hematopoietic. 1. pertaining to or affecting the formation of blood cells. 2. an agent that promotes the formation of blood cells. hematopoietic dysplasia. dyshematopoiesis. hematopoietic system. organs and tissues involved in the production of blood cells; includes bone marrow, spleen, thymus, lymph nodes. hematopoietic system. Etymology: Gk, haima, blood, poiein, to make; L, systema. body organs and tissues involved in the formation and functioning of blood elements. It includes the bone marrow and spleen. Medical Definition of HEMATOPOIESIS. : the formation of blood or of blood cells in the living body—called also hemopoiesis.  An immature cell that can develop into all types of blood cells, including white blood cells, red blood cells, and platelets. Hematopoietic stem cells are found in the peripheral blood and the bone marrow. Also called blood stem cell. Blood cell development. A blood stem cell goes through several steps to become a red blood cell, platelet, or white blood cell.  Haematopoietic stem cells (HSCs) reside in the medulla of the bone (bone marrow) and have the unique ability to give rise to all of the different mature blood cell types and tissues. However, maturation, activation, and some proliferation of lymphoid cells occurs in secondary lymphoid organs (spleen, thymus, and lymph nodes). In children, haematopoiesis occurs in the marrow of the long bones such as the femur and tibia. Prenatally, hematopoiesis occurs in the yolk sack, then in the liver, and lastly in the bone marrow. In the normal situation, hematopoiesis in adults occurs in the bone marrow and lymphatic tissues. All types of blood cells are derived from primitive cells (stem cells) that are pluripotent (they have the potential to develop into all types of blood cells).  Hematopoietic stem cells (HSCs) are the blood cells that give rise to all the other blood cells and are derived from mesoderm. They are located in the red bone marrow, which is contained in the core of most bones. They give rise to both the myeloid and lymphoid lineages of blood cells. Lymphoid cells include T cells, B cells, and natural killer cells .) The definition of hematopoietic stem cells has changed in the last two decades. The hematopoietic tissue contains cells with long-term and short-term regeneration capacities and committed multipotent, oligopotent, and unipotent progenitor Diagram showing the development of different blood cells from haematopoietic stem cell to mature cells. Haematopoiesis (from Greek αἷμα, blood and ποιεῖν to make; also hematopoiesis in American English; sometimes also haemopoiesis or hemopoiesis) is the formation of blood cellular components. However, maturation, activation, and some proliferation of lymphoid cells occurs in secondary lymphoid organs (spleen, thymus, and lymph nodes). In children, haematopoiesis occurs in the marrow of the long bones such as the femur and tibia.
http://webs.ashlandctc.org/mflath/KEY%20SKELETAL%20I%20OBJECTIVES.htm http://www.merriam-webster.com/dictionary/hematopoietic%20system http://medical-dictionary.thefreedictionary.com/hematopoietic+system http://www.merriam-webster.com/dictionary/hematopoiesis http://www.cancer.gov/publications/dictionaries/cancer-terms?CdrID=693540 https://en.wikipedia.org/wiki/Haematopoiesis http://www.medicinenet.com/script/main/art.asp?articlekey=19775 https://en.wikipedia.org/wiki/Hematopoietic_stem_cell https://en.wikipedia.org/wiki/Haematopoiesis
hematopoietic function definition