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51 Cards in this Set
- Front
- Back
Immunoglobulins that attach to mast cells and basophils and are involved in allergic reactions are...
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IgE
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cells that help regulate the immune response are______cells.
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helper T cells
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Suppressor T cells act to...
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depress the responses of other t cells and B cells
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NK cells are actively involved in immunological surveillance. TRUE/FALSE
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TRUE.
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Stem cells that will form T cells are modified in the...
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thymus
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Immunoglobulins that are found on the surface of B cells and may play a role in regulation of the humoral immune response are....
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IgD
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Immunoglobulins that are composed of 5 single molecules joined together, and are the first antibodies to be produced in response to infection, are...
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IgM
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IgA are primarily found in glandular secretions. TRUE/FALSE
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TRUE.
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List 3 potential results that can occur with the binding of an antigen to an antibody.
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1. neutralization of the antigen
2. agglutination or precipitation 3. complement activation and opsonization |
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In order for a lymphocyte to respond to an antigen, the antigen must...
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bind to specific receptors on the lymphocyte membrane
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The role of accessory cells in immunity is to...
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digest foriegn cells and molecules and present antigens.
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List 4 characteristics of 'human leukocyte antigen".
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1. allow the body to differentiate its own cells from foriegn cells
2. bind antigenic material, when present for presentation to lymphocytes 3. can be divided into 2 major classes 4. are found on all human cells |
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When an antigen is bound to a class 1 HLA molecule, it can stimulate a _____cell.
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cytotoxic T cell
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Class 11 HLA molecules are found only attached to...
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lymphocytes and macrophages
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When an antigen is bound to a class 11 HLA molecule, it can stimulate a _____cell.
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helper T cell
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B cells are primarily activated by the activities of...
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helper T cells
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List 4 functions of helper T cells.
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1. promote B cell division, plasma cell maturation, and antibody production
2. stimulate T cell divisions that produce memory T cells and accelerate maturation of cytotoxic T cells 3. attract and stimulate the activity of NK cells 4. enhance nonspecific defenses |
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List the basic order of the cell mediated immune response.
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1. antigen is engulfed and presented by a macrophage
2. undifferentiated T cells with specific receptors recognize the antigen 3. several cycles of mitosis occur 4. T cells differentiate into cytotoxic T cells and T memory cells 5. cytotoxic T cells migrate to focus of infection 6. cytotoxic T cells release perforin and or lymphotoxin. |
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List 4 actions of a primary humoral response to antigens.
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1. B cells may differentiate into plasma cells immediately
2. B cells may undergo several rounds of mitosis before producing plasma cells and memory cells 3. antibody levels do not peak until 1-2 weeks after the initial exposure 4. the first immunoglobulins to appear in circulation are the IgM type. |
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List 4 factors of the secondary or anamnestic response of humoral immunity.
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1. involves memory b cells
2. results in elevated titers of antibodies sooner than in the primary response 3. generally prevents a person from showing symptoms of the disease 4. can occur even if the 2nd exposure occurs years after the initial exposure. |
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List the stages of a bacterial infection.
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1. neutrophils and NK cells migrate into the infected area
2. inflammation, lymphokines, and monokines attract phagocytes 3. cytotoxic T cells appear 4. b cells differentiate and the number of plasma cells increases 5. a gradual sustained increase in antibodies occurs |
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List 4 hormones of the immune system.
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1. interleukins
2. interferons 3. natriuretic factor 4. chemicals that regulate phagocytes |
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List 4 functions of interleukins.
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1. increase T cell sensitivity to antigens exposed on macrophage membranes.
2. stimulate B cell activity, plasam cell formation and antibody production 3. stimulate inflammation 4. elevate body temperature |
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The only antibodies that normally cross the placenta are...
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IgG
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Autoantibodies function against the bodys normal antigens. TRUE/FALSE
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TRUE
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Lymphatic vessels commonly occur in association with...
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blood vessels
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What forms the right lymphatic duct?
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1. the right jugular, right subclavian, and right bronchomediastinal trunks
2. the left jugular, right subclavian, and right bronchomediastinal trunks |
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Dividing lymphocytes can be found in the_______ or central zone of the lymphoid nodule.
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core
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Lymph nodes range in diameter from...
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1mm to 25mm
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Lymphatic vessels are located in almost all portions of the body, except,
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CNS
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If you are taking care of a female patient with a damaged spleen, you would expect to see that...
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she is anemic as her body has difficulty storing iron
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Specific defenses depend on the activities of...
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lymphocytes
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Plasma contains______ special complement proteins that form the complement system.
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11 complement proteins
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The thoracic duct originates from an expanded chamber called the________
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cysterna chyli
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Fixed macrophages are phagocytic cells that are permanent residents of specific tissues and organs. TRUE/FALSE
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TRUE
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_______ are fixed macrophages that are found in the CNS.
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microglia
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______ are fixed macrophages found in the liver.
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Kuppfer cells
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_____ are fixed macrophages located in the epithelia of the skin
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Langerhans cells
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_______ are free macrophages found in the lungs.
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alveolar macrophages
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The ability of certain phagocytes to move through the wall of a capillary is called_______
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diapedesis
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_______ are antibodies that make it easier for phagocytes to engulf their target cells.
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opsonins
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The complement factor_______ can sustain and enhance the alternative pathway of complement fixation.
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properdin
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The portions of an antigen that are recognized by an antibody are the______
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antigenic determinant sites
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Antigens with only one antigenic site are called...
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partial antigens or haptens
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When large numbers of antibodies encounter their antigenic targets, they interact to form a three dimensional structure known as ....
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immune complex
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The process by which soluble antigens combine with antibodies to form insoluble immune complexes is called...
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precipitation
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Interleukins are hormones that regulate the activity of B and T cells and enhance nonspecific def. TRUE/FALSE
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TRUE
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if the thymus failed to produce the hormone thymosin, we would expect to see a decrease in the number of...
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cytotoxic T cells
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Milly has just received a kidney transplant, and is taking cyclosporin A. What does this medication do?
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suppresses cytotoxic T cells, thus preventing rejection
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A fluid sample contains a large amount of IgA type antibody. This fluid is probably....
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tears
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Injections of interleukin 11 will cause an increase if T cells. TRUE/FALSE
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TRUE
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