Terms : Hide Images
| 4156132040 | innate immunity | Immunity that is present before exposure and effective from birth. Responds to a broad range of pathogens. |  | 0 |
| 4156132041 | acquired immunity | Immunity that is present only after exposure and is highly specific. |  | 1 |
| 4156132042 | lymphocytes | White blood cells. |  | 2 |
| 4156132043 | antibodies | Protein that is produced by lymphocytes and that attaches to a specific antigen. |  | 3 |
| 4156132044 | neutrophils | Most abundant white blood cell., The most abundant type of white blood cell. Phagocytic and tend to self-destruct as they destroy foreign invaders, limiting their life span to a few days. |  | 4 |
| 4156132045 | complement system | A group of about 30 blood proteins that may amplify the inflammatory response, enhance phagocytosis, or directly lyse extracellular pathogens. |  | 5 |
| 4156132046 | interferon | Protein produced by cells in response to being infected by a virus; helps other cells resist the virus. |  | 6 |
| 4156132047 | inflammtory response | Innate response with the purpose of containing a site of damage, localizing the response, eliminating the invader and restore tissue function. |  | 7 |
| 4156132048 | histamine | Chemical stored in mast cells that triggers dilation and increased permeability of capillaries. |  | 8 |
| 4156132049 | natural killer (NK) cells | These cells kill cancer cells and cells infected with viruses. They bind to their targets and deliver a lethal burst of chemicals to produce holes in the target cell's membrane leading to its destruction. |  | 9 |
| 4156132050 | antigen | Any foreign molecule that is specifically recognized by lymphocytes and elicits an immune response. |  | 10 |
| 4156132051 | epitope | Small, accessible portion of an antigen that can be recognized. |  | 11 |
| 4156132052 | B lymphocytes (B cells) | Lymphocyte that matures in the bone marrow and secretes antibodies. |  | 12 |
| 4156132053 | T lymphocytes (T cells) | Lymphocyte that matures in the thymus and acts directly against antigens in cell-mediated immune responses. |  | 13 |
| 4156132054 | immunoglobulins | Secreted antibodies. |  | 14 |
| 4156132055 | antigen presentation | The process by which an MHC molecule binds to a fragment of an intracellular protein antigen and carries it to the cell surface, where it is displayed and can be recognized by a T cell. |  | 15 |
| 4156132056 | thymus | Gland in the thoracic cavity above the heart where T lymphocytes mature. |  | 16 |
| 4156132057 | memory cells | General term for lymphocytes that are responsible for immunological memory and protective immunity. |  | 17 |
| 4156132058 | primary immune response | Immune response the first time the body is exposed to a particular antigen. Does not peak until 10-17 days after exposure. |  | 18 |
| 4156132059 | secondary immune response | Immune response after the body has already been exposed to a specific antigen. Response is faster, of greater magnitude, and more prolonged. |  | 19 |
| 4156132060 | humoral immune response | The branch of acquired immunity that involves the activation of B cells and that leads to the production of antibodies, which defend against bacteria and viruses in body fluids. |  | 20 |
| 4156132061 | cell-mediated immune response | The branch of acquired immunity that involves the activation of cytotoxic T cells, which defend against infected cells. |  | 21 |
| 4156132062 | helper T cells | Activate macrophages, B cells and T cells. |  | 22 |
| 4156132063 | active immunity | A form of acquired immunity in which the body produces its own antibodies against disease-causing antigens. |  | 23 |
| 4156132064 | passive immunite | Immunity conferred by transferring antibodies from an individual who is immune to a pathogen to another individual. |  | 24 |
| 4156132065 | immunization | The deliberate exposure of a pathogen to produce memory cells. |  | 25 |
| 4156132066 | Rh factor | Refers to the presence or absence of the Rh antigen on red blood cells. |  | 26 |
| 4156132067 | graft versus host reaction | When lymphocytes in donated bone marrow react against the recipient. |  | 27 |
| 4156132068 | anaphylactic shock | A severe reaction that occurs when an allergen is introduced to the bloodstream of an allergic individual. Characterized by bronchoconstriction, labored breathing, widespread vasodilation, circulatory shock, and sometimes sudden death. |  | 28 |
| 4156132069 | autoimmune diseases | Diseases caused when the immune system loses tolerance for self and turns against certain molecules in the body. |  | 29 |
| 4156132070 | Acquired Immunodeficiency Syndrome (AIDS) | The most advanced, and fatal, stage of an HIV infection. |  | 30 |
| 4156132071 | B cell receptor | The antigen receptor on B cells: a Y-Shaped, membrane-bound molecule consisting of two identical heavy chains and two identical light chains linked by disulfide bridges and containing two antigen-binding sites. |  | 31 |
| 4156132072 | T cell receptor | Antigen receptors on a T cell. Unlike antibodies, T cell receptors are never produced in a secreted form. |  | 32 |
| 4156132073 | Major histocompatibility compex (MHC) | Binds to a fragment of an antigen within a cell and presents it on the surface of the membrane. |  | 33 |
| 4156132074 | cytotoxic T cells or "killer T cells" | T cells that directly attack infecting organisms; these cells attack antigen labeled foreign or host tissue. |  | 34 |
