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P&P 2010 immunity k
P&P 2010 immunity k
Question | Answer |
---|---|
To destroy foreign agents, Prevent development & growth of abnormal cells, is the function of what ? | Immune System Function: |
Key Blood Cell Involved is immunity is the | Lymphocyte |
another word for Foreign, “Non-self” is | antigen |
viruses, bacteria, fungi, parasites what type of antigen | Infectious agents |
pollens, foods, bee/snake venom are what type of antigen | Environmental |
drugs, vaccines, transfusions, transplanted tissue are what type pf antigen | Medical – |
antigens get the immune system to generate | antibodies |
A marker (on 6th chromosome) that marks all cells belonging to that person and prevents immune system from attacking itself is called | Major Histocompatability Complex MHC |
First Line – Surface Membrane Barriers, Intact skin, Intact Mucous Membranes, Mucus, Nasal hair,Cilia,Gastric juice,Lacrimal secretions (tears),and Saliva are what line of defence | first line of defense |
Nonspecific – Phagocytosis, Neutrophils & Monocytes → Macrophages, Inflammatory response,Fever and Antimicrobial Proteinsis what line of defense | second line of defense |
-what prevents viral reproduction in surrounding cells | Interferon |
what type of cell injects ‘perforin’ to kill virus / cancer cells | natural killer cells (NK) |
Cell - attacked by virus - secretes small protein …? | interferon (INF) |
? cannot save that cell - diffuses into nearby cells & prevents viral replication | interferon |
Not specific thus, interferon (INF) protects against | any virus |
what also activates macrophages & NK cells in the anticancer role | |
Nonspecific lymphocytes are also called | natural killer cells |
what attacks membranes & ‘shoot it’ with chemicals (perforins) → kills nucleus | interferon |
what can attack viruses & cancer cells | interferon |
a Specific Defenses - Immune Response- Specific,Systemic it has memory – stronger attack with each encounter (secondary response), and LYMPHOCYTES is what line of defense | third line of defense |
what does R.A.AT stand for | recogination, activation, attack |
Different lymphocytes have receptors for different antigens, When a lymphocyte finds its “match”, it binds it to its receptor is what step in the immune response | recognition first |
The binding stimulates the lymphocyte to start cell division ➵ clonal expansion (1 → 2 → 4 → 8 etc) is what step in the immune response | activation second |
Attack is started against all antigens of the type that were ‘recognized’ is what step of the immune response | attack third |
B cells –are what type of immunity | |
Originate in bone marrow, Travel to Thymus gland to mature, Once mature – divide the ‘workload’ is what type ofimmunity | Cell-Mediated ImmunityT Cells |
what type of cell directly attacks virus' with ‘perforins’ | Cytotoxic T-cells |
what type of cell Releases lymphokines to - Activate more T-cells, Stimulate macrophages, Attract neutrophils, Signal B-cells to start producing antibodies | Helper T-cells |
what inhibits T & B cells | Suppressor T-cells |
what type of cell Remembers this antigen for future reference | Memory T-cells |
B cells - bone marrow, Migrate to lymph nodes is what type of immunity | Humoral Immunity (B Cells) |
Clonal Expansion of B cells is the ? | Primary Response |
when antibodies attack antigens its called | Neutralization |
what binds antigens together ? | Agglutination |
what allows phagocytosis ? | Opsonization |
what activates the complement cascade? | lysis |
what triggers mast cell degranulation | inflammatory response |
what contains microbes that have been killed or attenuated | vaccine |
what contains bacterial toxins that have been modified to destroy toxicity | toxoid |
Both vaccine and toxoid induce antibody formation without causing severe disease therefore it creaits what type of immunity? | active immunity |
Routine immunization of children, Adults against tetanus, Immunization for a specific disease for high risk groups, Prior to travel to area where a disease is prevalent are ? | indacations of use for a vaccine |
what measures the level of antibodies in the blood | titre Contraindications |
During febrile illnesses, Immunosuppressive drug therapy, Immunodeficiency states – eg. Leukemia, and Pregnancy what is contraindicated | vaccines |
what type of vaccine is formulated annually,Grown in chick embryos – allergy to eggs, Single 0.5 ml IM dose | influenza vaccine |
what are made from an antigen/organism, Injected, and the B cells in the blood respond producing antibodies. | vaccines |
what binds to the antigen to "neutralize“ or inactivate it | |
what are produced and remain ready to respond against subsequent infection with the same disease causing agent | memory cells |
Provide temporary passive immunity for people already exposed to or experiencing a disease | Immune Serums and Antitoxins |
what is the goal of Immune Serums and Antitoxins | prevent or modify disease |
what aids in diagnosing tuberculosis | Tuberculin |
T cells are what type of immunity | cell mediated immunity |