NAME: ________________________

Chapter 21 Test

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5 Written Questions

5 Matching Questions

  1. A person who is HIV positive and has a helper T(Th) cells count lower than ______ has aids
  2. Special lymphatic vessels called lacteals absorb dietary _____ that are not absorbed by the blood capillaries.
  3. _____ are the largest of the lymphatic vessels and they empty into the _____
  4. The serum used for emergeny treatment of snakebites stimulates
  5. ____ are antimicrobial proteins
  1. a artifical passive immunity
  2. b Interferons
  3. c 200 cells/ml
  4. d lipids
  5. e collecting ducts; subclavian veins

5 Multiple Choice Questions

  1. cancer cells
  2. impaired use
  3. margination
  4. Neutrophils
  5. T cells

5 True/False Questions

  1. Helper T (Th) cells recognize antigens when they are bound to asecrete fever-producing chemicals


  2. Vaccination stimulatesdifferentiate into memory antibodies, which upon reexposure to the same pathogen would mount a quicker attack


  3. The human immunodeficiency virus (HIV) targets mainlytype I (acute) hypersensitivty


  4. Before B cells secrete antibodies they differentiate intodecades


  5. Each immunoglobin (Ig) has ____ antigen-bonding sitestwo


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