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A & P Chapter 10
| Term | Definition |
|---|---|
| Hematocrit | Percentage of total blood volume that is composed of red blood cells. |
| Hemoglobin | Essential molecule of the red blood cell that serves as the binding site for oxygen and carbon dioxide; composed of two molecules: globin and heme. |
| Hemolysis | Rupture of red blood cells as a result of disease or old age. |
| Hemostasis | Sequence of events that cause a blood clot to form and bleeding to stop. |
| Plasma | Liquid component of blood. |
| Platelets | Part of the formed elements of the blood; play a vital role in blood clotting. |
| Red Blood Cells | Contain hemoglobin, a protein responsible for oxygen and carbon dioxide exchange; erythoctes. |
| White Blood Cells | Fight Infection and protect the body through various mechanisms; leukocytes. |
| Agglutination | Red blood cells clumping together usually in response to an antibody; can block small blood vessels and cause hemolysis. |
| Antibody | Cells that circulate in plasma and attack red blood cells with foreign antigens or antigens that are different from those of the host. |
| Antigen | Protein on the surface of RBCs that is used to identify blood type; a molecule on the surface of cells that identifies cells as either "self" or "nonself" cells. |
| Erythoblastosis | A severe hemolytic disease of a fetus or newborn caused by the production of maternal antibodies against the fetal red blood cell antigens, usually involving RH incompatibility between the mother and fetus. |
| Rh Factor | Antigen of the Rh blood group that is found on the surface of red blood cells; people with the Rh factor are Rh positive and those lacking it are Rh negative. |
| RhoGAM | Immune serum that prevents a mother's blood from becoming sensitized to foreign antibodies from her fetus. |
| Universal Donor | Someone with type O blood, type O has no antigens that an be attacked by the host's blood, so it can be donated to anyone. |
| Universal Recipient | Someone with type AB blood; type AB blood has neither A or B antibodies, so a universal recipient can safely receive a transfusion of any blood type. |
| ALL | Most common form of leukemia in adults over 70, overproduction of lymphocytes. |
| AML | Most common form of leukemia in adults, develops when the bone marrow produces too many myeloblasts, |
| Anemia | A condition characterized by a decrease in the number of red blood cells or an insufficient amount of hemoglobin in the red blood cells. |
| CLL | Leukemia characterized by extremely high levels of lymphocytes; most often found in middle-age adults. |
| CML | Form of leukemia characterized by overproduction of granulocytes. |
| Hemophilia | Blood does not clot properly due to the absence of a clotting factor. |
| Iron-Deficient Anemia | Most common anemia; caused by an insufficient dietary intake of iron, loss of iron from intestinal bleeding, or iron-level depletion during pregnancy. |
| Jaundice | Blood disorder characterized by yellow-colored skin and whites of the eyes. |
| Leukemia | Cancer caused by the production of an extremely high number of immature white blood cells in the bone marrow. |
| Pernicious Anemia | Severe anemia caused by the inability of the intestines to absorb vitamin B12 which is essential for the formation of red blood cells, often occurs in older adults. |
| Phlebotomy | Drawing of blood; standard treatment for polycythemia. |
| Polycythemia | Condition in which the bone marrow manufactures too many red blood cells, caused by prolonged altitude exposure and a genetic mutation. |
| Sickle Cell Anemia | Disease in which the red blood cells are shaped like a sickle or crescent rather than a disk; caused by irregularly shaped hemoglobin molecules in the red blood cells, |