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Human Diseases: Ch 2 Immunity & Lymphatic System
Immunity and the Lymphatic System
Terms in this set (64)
the ability of the body to defend itself against infectious agents, foreign cells, and even abnormal body cells, such as cancer cells.
non-specific immunity (innate)
provides immediate but general protection against any foreign agent that enters the body: physical and chemical barriers, pahgocytosis, natural killer cells, fever, interferon, inflammation
specific immunity (adaptive)
effective against particular identified agents and develops on response to that agent; humoral: IgG, IgA, IgM, IgD, IgE cellular immunuity; B lymphocytes (plasma cells, memory cells), cell-mediated immunity, T Lymphocytes: cytotoxic, helper, memory, suppressor
the body's first line of defense.
white blood cells that can destroy infectious agents through phagocytosis.
cell eating. Leukocytes engulf and digest bacteria or other material.
natural killer cells
a type of leukocyte that recognizes body cells with abnormal membranes.
it aids the immune system by stimulating phagocytes, increasing metabolism, and inhibiting the multiplication of some microorganisms. (burns microorganisms up)
a group of substances that stimulate the immune system.
redness, swelling, heat and pain: a protective tissue response to injury or invasion
the increased amount of blood, causes the heat and redness associated with inflammation.
(leukocytes) specialized cells that defend the body against invading microorganisms and speed healing by engulfing cell debris in injured tissues.
the substance that damaged tissue releases, it causes the capillary walls to become more permeable.
the attraction of the white blood cells to the site of inflammation.
plasma and white blood cells that escape from the capilaries
the excessive production of white cells: a sign of infection or inflammation.
phagocytic white cells follow neutrophils in the process of clearing debris
plasma protein, essential for the blood-clotting mechanism, forms a clot in the damaged tissue, walling off the infection and preventing its spread
bacteria that cause pus formation.
an inflammation associated with pus formation.
the replacement of destroyed tissue with the same kind of cells
a type of connective tissue cell, produce collagen fibers, the fibers contract drawing the surfaces together
a network of lymphatic vessels, lymph nodes and other lymphoid organs.
occurs when tissues swell because lymphatic vessels are blocked.
a type of white blood cell that responds to bacteria, viruses, and foreign material in lymph.
the foreign element that triggers the immune response.
protection from infection provided by antibodies; B lymphocytes
cell mediated immunity
protection from infection provided by T cells
lymphocytes that are responsible for cell-mediated immunity and are processed by the thymus gland.
lymphocytes that are responsible for humoral immunity.
B lymphocytes that are transformed and divide rapidly and produce large numbers of antibodies.
neutralizes toxins and viruses.
B lymphocytes that don't become plasma cells and remain dormant until reactivated by the same antigen. They are responsible for a more potent and rapid antibody response during subsequent exposures to the same antigen.
occurs when individuals develop antibodies to their own tissues or self antigens.
Acquired Immunodeficiency Syndrome
a type of white blood cell that promotes inflamation and participates in allergic responses
cells found in connnective tissue; they contain heparin, seotonin, bradykinin, and histamine
antigen or erythtocyte used for blood typing
tissue grafts are transplanted from one site to another in the same patient
tissues donated by an identical twin
tissue grafts harvested from a different animal species
tissue transplanted from one person to another
chronic inflammatory disease
autoimmune disease of the connective tissue, characterized by the formation of scar tissue
calcinosis, Raynaud's phenomenon, esophageal dysfunction, sclerodactyly, and telangiectasia
formation of calcium deposits in the connective tissue; fingers, hands, face, and trunk
condition in which the small blood vessels of the hands and or feet contract in response to cold or anxiety
smooth muscles in the esophagus lose normal movement: swallowing difficulty in upper and lower esophagus, chronic heartburn or inflammation in lower
thick and tight skin on the fingers resulting from excess deposits of collagen within the skin layers
condition caused by swelling of tiny blood vessels; red spots appear on the hands and face
chronic autoimmune inflammatory disease of glands and other tissues; dry eyes, dry mouth, dry skin, vaginal dryness, can be systemic affecting the entire body
retrovirus; carries its genetic information as RNA; infects CD4 T lymphocytes
aquired immunodeficency syndrome; CD4 T lymphocyte count less than 200
person receives a vaccine or toxiod as the antigen, and he or she forms antibodies to counteract it
doses of preformed antibodies from immune serum, immunity is short lived but acts immediately
suspension of whole organisms or pieces that is used to induce immunity. attenuated whole-agent vacines use living but attuanted (weakened) organisms
chemically altered toxin, poisonous material produced by a pathogenic organism, stimulates the immune response
not induced through medical means; active immunity; person developing his own immune response to a microbe; passive immunity: person receiving immunity from another person (maternal)
produced through medical procedures (also called immunization)
physical and chemical barriers
skin, mucous membranes, cilia, secretions
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