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51 Cards in this Set

  • Front
  • Back
Clumping of red blood cells due to a reaction between antigens on red blood cell plasma membranes and antibodies in the plasma.
agglutination
Foreign substace capable of stimulating an allergic response
allergen
Immune response to substances that usually are not recognized as foreign.
allergy
Severe systemic form of anaphylaxis involving bronchiolar constriction, impaired breathing, vasodilation, and a rapid drop in blood pressure with a threat of circulatory failure.
analphylactic shock
Specific mechanism of defense in which plasma cells derived from B cells produce antibodies that combine with antigens
antibody-mediated immunity
Cell that displays the antigen to certain cells of the immune system so they can defend the body against that particular antigen.
antigen-presenting cell (APC)
Receptor proteins in the plasma membrane of immune system cells whose shape allows them to combine with a specific antigen.
antigen receptor
Programmed cell death involving a cascade of specific cellular events leading to death and destruction of the cell.
apoptosis
Condition in which bronchioles constrict and cause difficulty in breathing.
asthma
Disease that results when the immune system mistakenly attacke the body's own tissues.
autoimmune disease
Lymphocyte that matures in the bone marrow and, when stimulated by the presence of a specific antigen, gives rist ot antbody-producing plasma cells.
B lymphocyte (B cell)
Specific mechanism of defense in which T cells destroy antigen-bearing cells.
cell-mediated immunity
Slow, progressing inflammation of connective tissue, usually causes permanent tissue damage.
chronic inflammation
States that the antigen selects which lymphocyte will undergo clonal expansion and produce more lymphocytes bearing the same type of receptor.
clonal selection theory
Collective name for a series of enzymes and activators in the blood, some of which may bind to antibody and may lead to rupture of a foreign cell.
complement
Type of protein secreted by a T lymphocyte that attacks viruses, virally infected cells, and cancer cells.
cytokine
T lymphocyte that attacks and kills antigen-bearing cells.
cytotoxic T cell
Allergic response initiated at the site of the allergen by sensitized T cells, involving macrophages and regulated by cytokines.
delayed allergic response
Antigen-presenting cells of the epidermis and mucous membranes.
dendritic cell
Swelling due to tissue fluid accumulation in the intercellular spaces.
edema
Seasonal variety of allergic reaction to a specific allergen. Characterized by sudden attacks of sneezing, swelling of nasal mucosa, and often asthmatic symptoms.
hay fever
Secretes lymphokines, which stimulate all kinds of immune cells
helper T cell
Substance, produced by basophils in blood and mast cells in connective tissue, that causes capillaries to dilate.
histamine
Allergic response that occurs within seconds of contact with an allergen; caused by the attachment of the allergen to IgE antibodies.
immediate allergic response
Ability of the body to protect itself from foreign substances and cells, including disease-causing agents.
immunity
Strategy for achieving immunity to the effects of specific disease-causing agents.
immunization
Globular plasma protein that functions as an antibody.
immunoglobulin (Ig)
Tissue response to injury that is characterized by redness, swelling, pain, and heat.
inflammatory response
Antiviral agent produced by an infected cell that blocks the infection of another cell.
interferon
Cytokine produced by macrophages and T lymphocytes that functions as a metabolic regulator of the immune reponse.
interleukin
Fluid, derived from tissue fluid, that is carried in lymphatic vessels.
lymph
Organ system consisting of lymphatic vessels and lymphoid organs; transports lymph and lipids, and aids the immune system.
lymphatic system
Vessels that carries lymph
lymphatic vessel
Mass of lymphoid tissue located along the course of a lymphatic vessel.
lymph node
Organ other than a lymphatic vessel that is part of the lymphatic system; the lymphoid organs are the lymph nodes, tonsils, spleen, thymus gland, and bone marrow.
lymphatic (lymphoid) organ
In vertebrates, large phagocytic cell derived from a monocyte that ingests microbes and debris.
macrophage
Connective tissue cell that releases histamine in allergic reactions.
mast cell
Group of complement proteins that form channels in microbe surface and destroy microbes.
membrane attack complex
Forms during a primary immune response but enters a resting phase until a secondary immune response occurs.
memory B cell
One of many antibodies produced by a clone of hybridoma cells that all bind to the same antigen.
monoclonal antibody
Lymphocyte that causes an infected or cancerous cell to burst.
natural killer (NK) cell
Disease-causing agent such as viruses, parasitic bacteria, fungi, and animals.
pathogen
Lymphatic organs located in small intestine.
Payer's patches
Mature B cell that mass-produces antibodies.
plasma cell
Vascularized, modified connective tissue that is sometimes found in the cavities of spongy bone; site of blood cell formation.
red bone marrow
Large, glandular organ located in the upper left region of the abdomen; stores and purifies blood.
spleen
Lymphocyte that matures in the thyumus and exists in four varieties, one of which kills antigen-bearing cells outright.
T lymphocyte (T cell)
Lymphoid organ involved in the development and functioning of the immune system; lymphocytes mature in the thymus gland.
thymus gland
Partially encapsulated lymph nodules located in the pharynx.
tonsils
Antigens prepared in such a way that they can promote active immunity without causing disease.
vaccine
Small, tubular appendage that extends outward from the cecum of the large intestine.
vermiform appendix