what is a hematopoiesis
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- hematopoiesis. the formation and development of blood cells, usually taking place in the bone marrow. cyclic hematopoiesis of collies. see canine cyclic hematopoiesis.[hē′mətōpō·ē′sis, hem′-]. Etymology: Gk, haima + poiein, to make. the normal formation and development of blood cells in the bone marrow. In severe anemia and other hematologic disorders, cells may be produced in organs outside the marrow (extramedullary hematopoiesis).xtramedullary hematopoiesis. the formation of and development of blood cells outside the bone marrow, as in the spleen, liver and lymph nodes. fetal hematopoiesis. in embryogenesis migration of stem cells from the yolk sac blood islands sets up hematopoiesis in thymus, lymph nodes, liver and spleen.
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- An ecchymosis is a bruise. A hematoma is a blood clot. A Hematoma is a collection of clotted blood outside a blood vessel. A Ecchymosis(commonly called a bruise) is blood leaked out from a blood vessel under the skin. Hematomas are swellings and has more of a three dimensional character to it, while ecchymoses are flat.
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- The myelodysplastic syndromes (also known as MDS or myelodysplasia) are hematological (i.e., blood-related) medical conditions with ineffective production (or  dysplasia ) of all blood cells. Patients with MDS can develop severe anemia and require blood transfusions. In some cases, the disease worsens and the patient develops cytopenias (low blood counts) caused by progressive bone marrow failure. The outlook in MDS depends on the type and severity. Many people live normal lifespans with MDS. The myelodysplastic syndromes are all disorders of the hematopoietic stem cells in the bone marrow (only related to myeloid lineage). In MDS, hematopoiesis (i.e., blood production) is disorderly and ineffective. The number and quality of blood-forming cells decline irreversibly, further impairing blood production. The mean age of onset of MDS is 68 years.
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Medical Definition of Hematopoiesis 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
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Hematoma A hematoma (US spelling) or haematoma (UK spelling) is a localized collection of blood outside the blood vessels, due to either disease or trauma including injury or surgery and may involve blood continuing to seep from broken capillaries.
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Hemoptysis Hemoptysis or haemoptysis is the act of coughing up blood or blood-stained mucus from the bronchi, larynx, trachea, or lungs.
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Ecchymosis For the Colombian band, see Ekhymosis. An ecchymosis is a subcutaneous spot of bleeding (from extravasation of blood) with diameter larger than 1 centimeter. It is similar to (and sometimes indistinguishable from) a hematoma, commonly called a bruise, though the terms are not interchangeable in careful usage.n ecchymosis is a subcutaneous spot of bleeding (from extravasation of blood) with diameter larger than 1 centimeter.
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- hemoptysis(hee-MOP-tih-sis) is coughing up of bloodstained sputum derived from the lungs or bronchial tubes as the result of pulminary or bronchial hemorrhage.(hem/o means blood, and -ptysis means spitting. Hemoptysis Hemoptysis hemoptysis Hemoptysis Hemoptysis The literal term for this is hemoptysis.
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- Polycythemia is a blood condition in which the bone marrow makes excess blood cells, primarily red blood cells, but also platelets and white blood cells.he extra cells cause a thickening of the blood, which increases the risk of blood clotting, in turn potentially causing strokes, heart attacks, and other complications. While the exact cause of polycythemia is not known, genetic changes are thought to be related to its development.
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- 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
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- Hemopoiesis or hematopoiesis is the medical term for blood cell formation. Hematopoietic means pertaining to hematopoiesis. hematopoiesis (HEE-mah-toh-poy-EE-sis) hemat/o- … = blood + -poiesis = condition of formation.+ 8 others found this useful.edical term for within the cell is intra- (meaning within or inside) cellular (meaning cell) *** intracellular*** -cytic. 2 people found this useful.
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A Look at Hematopoiesis This is the term used for blood cell production that occurs outside of the bone marrow. It can be seen in chronic anemia, with production in the liver, spleen and sometimes in the lymph nodes. At other times, there are malignant hematopoietic cells located in areas outside of the bone marrow. Sources.
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- Polycythemia vera (POL-e-si-THEE-me-ah VAY-rah or VE-rah), or PV, is a rare blood disease in which your body makes too many red blood cells. The extra red blood cells make your blood thicker than normal.As a result, blood clots can form more easily.olycythemia vera (POL-e-si-THEE-me-ah VAY-rah or VE-rah), or PV, is a rare blood disease in which your body makes too many red blood cells. The extra red blood cells make your blood thicker than normal.
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Polycythemia Polycythemia (also known as polycythaemia or polyglobulia) is a disease state in which the proportion of blood volume that is occupied by red blood cells increases. Blood volume proportions can be measured as hematocrit level. A hematocrit of >55% is seen in polycythemia.
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- 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.he 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.
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Hematoma A hematoma is a collection of blood, usually clotted, outside of a blood vessel that may occur because of an injury to the wall of a blood vessel allowing blood to leak out into tissues where it does not belong.
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- The composition of cells in the bone marrow cavity has an important influence on the productivity of blood stem cells. Extramedullary hematopoiesis (EM H) is the production of hematopoietic precursors outside the bone marrow cavity, and it causes mass effects according to its localization.
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extramedullary hematopoiesis regenerative hematopoiesis increased hematopoietic activity in response to a need for more cells; indicated by the presence of a higher than normal proportion of immature forms in the peripheral blood.
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- Share: Polycythemia (say: polly-sigh-thee-me-ah) vera (PV) is a rare disease in which your body makes too many red blood cells.Your blood may become too thick. This causes serious health problems. PV increases the risk of abnormal blood clots, which could lead to a stroke.hat is polycythemia vera? Polycythemia (say: polly-sigh-thee-me-ah) vera (PV) is a rare disease in which your body makes too many red blood cells.
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Blood Disorders Hematology is the study of blood in health and disease. It includes problems with the red blood cells, white blood cells, platelets, blood vessels, bone marrow, lymph nodes, spleen, and the proteins involved in bleeding and clotting (hemostasis and thrombosis).
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Medical Dictionary Hematoma Topic Guide. Hematoma: A hematoma is a collection of blood outside a blood vessel usually caused by injury to the blood vessel wall. Causes of hematoma include trauma, head injury, bumps, infections, and diseases. Symptoms may be pain, redness, and swelling. Treatment of hematoma depends on the cause. Read the Hematoma Main Article >>.
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Haematopoiesis 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.owever, 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.
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- Hemoptysis or haemoptysis is the act of coughing up blood or blood-stained mucus from the bronchi, larynx, trachea, or lungs. This can occur with lung cancer, infections such as tuberculosis, bronchitis, or pneumonia, and certain cardiovascular conditions.
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extramedullary hematopoiesis [he″mah-to-poi-e´sis] the formation and development of blood cells. In the embryo and fetus it takes place in a variety of sites including the liver, spleen, thymus, lymph nodes, and bone marrow; from birth throughout the rest of life it is mainly in the bone marrow with a small amount occurring in lymph nodes. Called also hematogenesis, hemogenesis, and hemopoiesis. extramedullary hematopoiesis the formation and development of blood cells outside the bone marrow, as in the spleen, liver, and lymph nodes.
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- Hematopoiesis: The production of all types of blood cells including formation, development, and differentiation of blood cells. 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). Last Editorial Review: 5/13/2016.
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aHUS BOOTCAMP Hemolytic Uremic Syndrome. What is hemolytic uremic syndrome? Hemolytic uremic syndrome (HUS) is a condition that affects the blood and blood vessels. It results in the destruction of blood platelets (cells involved in clotting), a low red blood cell count (anemia) and kidney failure due to damage to the very small blood vessels of the kidneys.