BSC 216 EXAM 2 QUESTIONS & ANSWERS
Fluid found in the lymphatic vessels is known as... - Answer -lymph
T or F: Lymph capillaries form a two-way system that moves lymph to and from the
heart. - Answer -False; they are blind-ended.
Mucosa-associated lymphatic tissues (MALT) include the: - Answer -tonsils (peyer's
patch and pancreas)
Which of the following is NOT a surface barrier serving as the first line of defense? -
Answer -antibodies
Which lymphoid organ is required for the selection of a functional population of T
lymphocytes (T cells) for the immune system? - Answer -thymus
T or F: Surface barriers, such as the cutaneous and mucous membranes, provide
innate immunity against pathogens. - Answer -False; surface barriers are physical, a
first defense line and innate immunity is the second defense line.
What cells display portions of the pathogens (antigens) they ingest on their plasma
membranes? - Answer -antigen-presenting cells
Which of the following is NOT a cytokine involved in innate immunity? - Answer -
opsonins
How long after initial tissue damage does leukocytosis occur? - Answer -2-3 days
Where do T cells become immunocompetent? - Answer -thymus
What protein, released by cytotoxic T (TC) cells, perforates a target cell's plasma
membrane so that enzymes can enter and fragment the target cell's DNA? - Answer -
perforins
T or F: Self antigens usually generate an immune response in our own bodies. -
Answer -False
IgA - Answer -Found in secretions such as breast milk and saliva
IgD - Answer -The only antibody not secreted in significant amounts by B cells
IgE - Answer -Binds antigens associated with parasitic pathogens and allergens EEEW
parasites & allergEEs
, IgG - Answer -The only antibody that can cross the placenta from mother to fetus the
o.G. antibody (started from the mom now we here...in the fetus)
IgM - Answer -The first antibody secreted upon exposure to an antigen (mmmmm girl
you got exposed)
What type of cell is activated in lymphatic tissue by macrophages presenting antigens
during a viral infection? - Answer -helper T (TH) cell
T cells and natural killer (NK) cells are largely involved in scanning the cells in the body
for tumor antigens, a function known as: - Answer -immune surveillance
Cancer cells can suppress T cell activity by releasing: - Answer -cytokines
Blood transfusions between incompatible blood types results in: - Answer -Type II, or
antibody-mediated, hypersensitivity
What cells decline in number during the final phase of HIV-1 infection, when an
individual is said to have AIDS? - Answer -helper T (TH) cells
T or F: Immunodeficiency disorders can result from a failure of one component of the
immune system. - Answer -True
Which lymph trunks receive lymph from the upper limbs? - Answer -subclavian trunks
What mucosa-associated lymphatic tissue (MALT) traps pathogens entering the nasal
and oral cavities? - Answer -tonsils
Where are pathogens filtered from lymph? - Answer -lymph nodes
Surface barriers, such as cutaneous and mucous membranes, serve the immune
system as the: - Answer -first line of defense
What are the primary cells of adaptive immunity? - Answer -lymphocytes
Which of the following is NOT a cardinal sign of inflammation? - Answer -cold
Which of the following are true of class I major histocompatibility complex (MHC)
molecules? - Answer -Class I MHC molecules present endogenous antigens.
What is a determinant for organ compatibility and rejection of transplants? - Answer -
major histocompatibility complex (MHC) molecules
Activated B cells differentiate into: - Answer -plasma cells and memory B cells
Which of the following is NOT a function of antibodies? - Answer -phagocytosis
Fluid found in the lymphatic vessels is known as... - Answer -lymph
T or F: Lymph capillaries form a two-way system that moves lymph to and from the
heart. - Answer -False; they are blind-ended.
Mucosa-associated lymphatic tissues (MALT) include the: - Answer -tonsils (peyer's
patch and pancreas)
Which of the following is NOT a surface barrier serving as the first line of defense? -
Answer -antibodies
Which lymphoid organ is required for the selection of a functional population of T
lymphocytes (T cells) for the immune system? - Answer -thymus
T or F: Surface barriers, such as the cutaneous and mucous membranes, provide
innate immunity against pathogens. - Answer -False; surface barriers are physical, a
first defense line and innate immunity is the second defense line.
What cells display portions of the pathogens (antigens) they ingest on their plasma
membranes? - Answer -antigen-presenting cells
Which of the following is NOT a cytokine involved in innate immunity? - Answer -
opsonins
How long after initial tissue damage does leukocytosis occur? - Answer -2-3 days
Where do T cells become immunocompetent? - Answer -thymus
What protein, released by cytotoxic T (TC) cells, perforates a target cell's plasma
membrane so that enzymes can enter and fragment the target cell's DNA? - Answer -
perforins
T or F: Self antigens usually generate an immune response in our own bodies. -
Answer -False
IgA - Answer -Found in secretions such as breast milk and saliva
IgD - Answer -The only antibody not secreted in significant amounts by B cells
IgE - Answer -Binds antigens associated with parasitic pathogens and allergens EEEW
parasites & allergEEs
, IgG - Answer -The only antibody that can cross the placenta from mother to fetus the
o.G. antibody (started from the mom now we here...in the fetus)
IgM - Answer -The first antibody secreted upon exposure to an antigen (mmmmm girl
you got exposed)
What type of cell is activated in lymphatic tissue by macrophages presenting antigens
during a viral infection? - Answer -helper T (TH) cell
T cells and natural killer (NK) cells are largely involved in scanning the cells in the body
for tumor antigens, a function known as: - Answer -immune surveillance
Cancer cells can suppress T cell activity by releasing: - Answer -cytokines
Blood transfusions between incompatible blood types results in: - Answer -Type II, or
antibody-mediated, hypersensitivity
What cells decline in number during the final phase of HIV-1 infection, when an
individual is said to have AIDS? - Answer -helper T (TH) cells
T or F: Immunodeficiency disorders can result from a failure of one component of the
immune system. - Answer -True
Which lymph trunks receive lymph from the upper limbs? - Answer -subclavian trunks
What mucosa-associated lymphatic tissue (MALT) traps pathogens entering the nasal
and oral cavities? - Answer -tonsils
Where are pathogens filtered from lymph? - Answer -lymph nodes
Surface barriers, such as cutaneous and mucous membranes, serve the immune
system as the: - Answer -first line of defense
What are the primary cells of adaptive immunity? - Answer -lymphocytes
Which of the following is NOT a cardinal sign of inflammation? - Answer -cold
Which of the following are true of class I major histocompatibility complex (MHC)
molecules? - Answer -Class I MHC molecules present endogenous antigens.
What is a determinant for organ compatibility and rejection of transplants? - Answer -
major histocompatibility complex (MHC) molecules
Activated B cells differentiate into: - Answer -plasma cells and memory B cells
Which of the following is NOT a function of antibodies? - Answer -phagocytosis
