Lymph/immune 3 Flashcards
Immunity that is genetically determined and present at birth is called \_\_\_\_\_ immunity. A. active B. natural passive C. passive D. auto E. innate
E. innate
Immunoglobulins that attach to mast cells and basophils and are involved in allergic reactions are A. IgA. B. IgD. C. IgE. D. IgG. E. IgM.
C. IgE.
Hormones of the immune system include all of the following, except A. interleukins. B. interferons. C. natriuretic factor. D. chemicals that regulate phagocytes. E. tumor necrosis factors.
C. natriuretic factor.
The cells known as lymphocytes A. are actively phagocytic. B. destroy red blood cells. C. produce proteins called antibodies. D. are primarily found in red bone marrow. E. decrease in number during infection.
C. produce proteins called antibodies.
Antibodies are primarily effective against \_\_\_\_\_ rather than \_\_\_\_\_. A. viruses; pathogens B. bacteria; viruses C. viruses; bacteria D. pathogens; viruses E. none of the above
B. bacteria; viruses
Lymphoid stem cells that can form all types of lymphocytes occur in the A. bloodstream. B. thymus. C. bone marrow. D. spleen. E. intestines.
C. bone marrow.
Immunity that results from the natural exposure to an antigen in the environment is called \_\_\_\_\_ immunity. A. active B. natural passive C. passive D. auto E. innate
A. active
Immunoglobulins that are found on the surface of B cells and may play a role in regulation of the humoral immune response are A. IgA. B. IgD. C. IgE. D. IgG. E. IgM.
B. IgD.
Interleukins do all of the following, except A. increase T-cell sensitivity to antigens exposed on macrophage membranes. B. stimulate B-cell activity, plasma cell formation, and antibody production. C. stimulate inflammation. D. elevate body temperature. E. stimulate fibrin formation.
E. stimulate fibrin formation.
Lymphocytes are located in each of the following tissues or organs, except the A. tonsils. B. spleen. C. lymph nodes. D. brain. E. thymus gland.
D. brain.
Lymphatic vessels are located everywhere, except the A. brain. B. central nervous system. C. spinal cord. D. throat. E. A, B, and C
E. A, B, and C
Lymphoid tissue is found in the greatest quantity in A. the adult spleen. B. the adult thymus. C. bone marrow. D. the tonsils. E. the intestines.
A. the adult spleen.
Newborn infants gain most of their immunity from A. early immunizations. B. contact with viruses and bacteria. C. antibodies passed from the mother across the placenta. D. contact with siblings. E. innate factors.
C. antibodies passed from the mother across
the placenta.
Immunoglobulins that are composed of five
single molecules joined together, and are the
first antibodies to be produced in response to
infection, are
A. IgA.
B. IgD.
C. IgE.
D. IgG.
E. IgM.
E. IgM.
\_\_\_\_\_ are large lymphatic nodules that are located in the walls of the pharynx. A. Tonsils B. Peyer’s patches C. Lymph nodes D. Immune complexes E. Spleens
A. Tonsils
Immunity that results from antibodies that pass the placenta from mother to fetus is called \_\_\_\_\_ immunity. A. active B. natural passive C. passive D. auto E. innate
B. natural passive
T cells and B cells can be activated only by
A. pathogens.
B. interleukins, interferons, and colony-stimulating
factors.
C. cells infected with viruses, bacteria, or cancer cells.
D. exposure to a specific antigen at a specific site in a
cell membrane.
E. disease-causing agents.
D. exposure to a specific antigen at a specific site in a
cell membrane.
Class II MHC proteins appear in the cell membrane only when A. the plasma cells are releasing antibodies. B. the cell is processing antigens. C. cytotoxic T cells are inhibited. D. NK cells are activated. E. none of the above
B. the cell is processing antigens.
Immunoglobulins that are primarily found in glandular secretions are A. IgA. B. IgD. C. IgE. D. IgG. E. IgM.
A. IgA.
\_\_\_\_\_ are clusters of lymphatic nodules located beneath the epithelial lining of the small intestine. A. Tonsils B. Adenoids C. Peyer’s patches D. Immune complexes E. Lymph glands
C. Peyer’s patches
