Straighterline AP2 202 Anatomy & Physiology 2 A&P 2 A&P 2 test 5 Grade 40.00 out of 40.00 (100%)

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Straighterline AP2 202 Anatomy & Physiology 2 A&P 2 A&P 2 test 5 Grade 40.00 out of 40.00 (100%) Question 1 Question text Which of the following is NOT a secondary lymphatic organ? Select one: ... a. spleen b. lymph node c. lymphatic nodule d. thymus gland Question 2 Question text Natural Killer (NK) cells Select one: a. a type of macrophage. b. are a type of plasma cell. c. secrete enzymes that kill tumor or virus-infected cells. d. are derived from B cells. e. promote inflammation. Question 3 Question text A protein that helps to protect the body against viral infections is Select one: a. complement. b. interferon. c. lysozyme. d. histamine. e. kinin. Question 4 Question text Lymphocytes with a CD8 glycoprotein on their surface are called ______ cells and lymphocytes with a CD4 glycoprotein on their surface are called ______ cells. Select one: a. cytotoxic T; B b. B; cytotoxic T c. B; helper T d. helper T; cytotoxic T e. cytotoxic T; helper Question 5 Question text A surface chemical that prevents microbial growth is Select one: a. histamine. b. leukotriene. c. sebum. d. kinin. e. interferon. Question 6 Question text Complement proteins Select one: a. can form holes in the plasma membrane of target cells. b. are on the surface of macrophages. c. are hormones found in the blood. d. may cause the release of interferon. e. do not attract neutrophils, monocytes, macrophages, or eosinophils. Question 7 Question text As a result of opsonization, Select one: a. holes are produced in target cell membranes. b. organ transplant rejection occurs. c. antigens are more susceptible to phagocytosis. d. antigens clump together. e. inflammation, chemotaxis, and lysis occur. Question 8 Question text The type of adaptive immunity that provides immediate protection against disease when there is no time for the person to develop their own immunity is called _____ immunity. Select one: a. active natural b. active artificial c. passive innate d. passive artificial e. active immediate Question 9 Question text Cells that process antigen and present antigens to other immune cells are called Select one: a. plasma cells. b. antigen-presenting cells. c. B receptor cells. d. T suppressor cells. e. antibodies. Question 10 Question text The MHC class I antigen complex displays a foreign antigen on the cell surface. This prompts the immune system to destroy Select one: a. B cell clones. b. extracellular antigens. c. the displaying cell. d. mature red blood cells. e. the virus inside the cell, but not the cell. Question 11 Question text Which of the following most accurately describes how foreign substances can activate complement? Select one: a. Antibodies can bind to foreign antigens and activate complement through the classical pathway. b. Foreign substances can bind to spontaneously activated C3 and stabilize it. c. Foreign proteins bind to C1 and activate it. d. Foreign proteins are phagocytized by macrophages and directly activate complement. e. Antibodies can bind to foreign antigens and activate complement through the classical pathway and foreign substances can bind to spontaneously activated C3 and stabilize it. Question 12 Question text The type of cell responsible for the secondary response is a Select one: a. mast cell. b. macrophage. c. memory cell. d. red blood cell. e. monocyte. Question 13 Question text The HIV virus can be transmitted Select one: a. only from males to other males. b. during unprotected sexual intercourse. c. by coughing or sneezing. d. by contact with people at work. e. by hugging an infected child. Question 14 Question text In immunodeficiency diseases, Select one: a. the immune system fails to distinguish between self-antigens and foreign antigens. b. inadequate B and/or T cell formation may occur. c. IgE mediates a localized reaction. d. serum sickness results. e. immune surveillance occurs. Question 15 Question text Which of the following is false? Select one: a. The HIV virus binds to the CD4 molecule of host cells. b. There is currently only one cure for AIDS - AZT. c. Most manifestations of AIDS are explained by the loss of helper T cell functions. d. Once infected by the virus, a person will test positive for HIV antibodies. e. In order for HIV to replicate, viral RNA is used to make viral DNA, which is inserted into the host cell's DNA. Question 16 Question text Which of the following is NOT an aging effect of the lymphatic system and immunity? Select one: a. Fluid removal by the lymphatic capillaries is reduced. b. Fewer antibodies are produced. c. Onset of autoimmune diseases is unchanged. d. T cell numbers remain constant but they are less functional. Question 17 Question text The HIV virus infects Select one: a. B cells. b. cytotoxic T cells. c. suppressor T cells. d. helper T cells. e. monocytes. Question 18 Question text Which of the following will increase your risk of contracting the HIV virus? Select one: a. use of a condom during intercourse b. heat treatment of clotting factors prior to transfusion c. use of contaminated needles d. reduction in the number of sexual partners e. abstinence Question 19 Question text An abnormal, exaggerated response of the immune system is called Select one: a. immunization. b. an innate immune response. c. hypersensitivity. d. excess immunity. e. tolerance. Question 20 Question text Several research groups are working on vaccines that will be effective against the AIDS virus. When a successful vaccine is produced, it is likely to be injected to produce Select one: a. active natural immunity. b. active artificial immunity. c. passive natural immunity. d. passive artificial immunity. e. active passive immunity. 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