16.1 Immune system

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XQWCat
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16.1 Immune system
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2011-11-15 23:44:42
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16.1 Immune system
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  1. active immunity
    immunity that follows exposure to antigen; exposure can be natural or by vaccination
  2. agammaglobulinemia
    condition in which animal has no circulating gamma globulins (antibodies) in its blood, causing it to be highly susceptible to infection
  3. anaphylaxis
    severe response to a foreign substance; acute life-threatening symptoms such as swelling, airway blockage and tachycardia may develop
  4. antibody (immunoglobulin)
    specialized serum proteins produced by B lymphocytes in response to particular foreign antigen; facilitates removal or clearance of antigen
  5. antigen
    foreign substance that binds specifically to antibody or T cells and elicits immune response
  6. antiinflammatory drug
    drug such as aspirin or ibuprofen that counteracts or suppresses inflammation
  7. apoptosis
    programmed cell death in which the cell self-destructs
  8. atopy
    clinical syndrome involving hypersensitivity or allergy with hereditary predisposition, often seasonal and characterized by pruritus
  9. autoimmune disease
    disease caused by immune attack against animal's own tissues
  10. B cells
    lymphocytes that mature in bone marrow and are precursors of antibody-secreting plasma cells
  11. bovine virus diarrhea (BVD)
    infectious viral disease of cattle causing diarrhea, stomatitis, and rhinitis in young animals
  12. cell-mediated immunity (cellular immunity)
    immune response mediated by T cells that play a roll in protection against various bacteria, viruses and cancer
  13. colostrum
    thick, yellow secretion present in mammary gland after parturition; first milk is very rich in maternal antibodies and plays important part in providing passive immunity to neonate
  14. complement
    group of serum proteins that participates in sequence of reactions, resulting in cell lysis
  15. cyclic hematopoiesis
    inheritied condition occurring in collies that have silver-gray coat; these dogs have cyclic fluctuations in their number of white blood cells, causing them to be more susceptible to infections
  16. cytokines
    protein messengers released by cells of immune system that regulate host cell growth and function in immune defense
  17. failure of passive transfer (FPT)
    occurs when neonate does not recieve colostrum or is unable to absorb antibodies, predisposing animal to infection
  18. feline immunodeficiency virus (FIV)
    lentivirus that infects cats and gradually destroys selected populations of T lymphocytes, resulting in immunodeficient state
  19. feline leukemia virus (FeLV)
    oncovirus that produces variety of conditions in cats including neoplasia, anemia, and reproductive failure; immunosuppression predisposes animal to wide spectrum of secondary diseases
  20. gamma globulin
    immunoglobulin G, most abundant immunoglobulin circulating in body
  21. hemolytic anemia
    can occur as result of disorder of immune system in which antibodies fail to recognize body's own red blood cells and destroy them
  22. histamine
    naturally occurring chemical found in body tissues; involved in hypersensitivity reactions, causing capillary dilation and smooth muscle contraction
  23. humoral immunity
    immunity that can be transferred by antibodies present in plasma, lymph and tissue fluids
  24. hypersensitivity
    exaggerated immune response causing damage to animal
  25. immunomodulator (immunostimulant)
    drugs, such as levamisole, that modulate or stimulate immune system
  26. immunosuppression
    suppression of immune system
  27. immunosuppressive drugs
    drugs, such as cyclophosphamide and cyclosporin, that suppress immune system
  28. interferon
    natural protein produced by variety of cell types that induces antiviral state in cells and helps to regulate immune response
  29. lymphoma
    any cancer of lymphatic tissue
  30. lysis
    destruction of cells or other antigens by specific antibody; lyse is the verb form
  31. major histocompatibility complex (MHC)
    tightly linked cluster of genes whose product, the MHC proteins, are associated with intercellular recognition and self/nonself discrimination
  32. memory cell
    clonally expanded progeny of T cells and B cells formed after primary antigen response; responsible for speed and higher level of secondary immune response
  33. multiple myeloma
    malignant neoplasm in which plasma cells proliferate and invade bone marrow, causing bone destruction
  34. myasthenia gravis
    action of neurotransmitter acetylcholine is affected, producing syndrome of episodic muscle weakness, which is aggravated by activity; may be acquired as autoimmune disease
  35. natural killer cell (NK)
    type of null cell that has cytotoxic ability
  36. null cells
    small group of lymphocytes that fail to express surface molecules characteristic of B cells and T cells
  37. opportunistic
    type of disease caused by immunosuppression or debilitation when disease normally would not occur
  38. passive immunity
    transient immunity; protection of one individual conferred by administration of antibody produced in another individual
  39. phagocytosis
    condition whereby matter is engulfed and destroyed
  40. plasma cells
    antibody-producing cells derived from activated B-cells
  41. primary immune response
    initial humoral and cellular immune response to antigen
  42. prostaglandins
    naturally occurring chemicals that cause vascular permeability and help to control inflammation
  43. pyrogens
    agents released by defending leukocytes, causing body temperature to increase and immune system to be activated
  44. rheumatoid arthritis
    chronic autoimmune disease that causes erosion and destruction of joints, producing swelling and lameness
  45. secondary immune response (memory response)
    more rapid and heightened immune response that occurs after second exposure to antigen
  46. severe combined immunodeficiency disease (SCID)
    congenital immune system deficiency disease in which animal must be kept in sterile environment to prevent illness or death from infections
  47. systemic lupus erythematosis (SLE)
    chronic disease of autoimmune origin involving many organ systems, characterized by joint, renal, skin and hematologic disorders
  48. T cells
    lymphocytes that depend on thymus for their differentiation; involved in cellular immunity
  49. T cytotoxic cells
    T lymphocytes that are attack cells; also called CD8+ cells
  50. T helper cells
    T lymphocyts that, when activated, release growth and differentiation factors to enhance both cell-mediated and humor immune responses; also called CD4+ cells
  51. titer
    amount of one substance needed to correspond with a given amount of another substance; used to denote antibody or antigen levels
  52. vaccination
    administration of antigen (vaccine) to stimulate protective immune response against infectious agent
  53. vaccine
    suspension of living or inactivated organisms used as antigen to confer immunity

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