chapter 16 Flashcards
Which of the following is a characteristic of the third line of defense that makes it significantly different
from the second line?
the response is specific to a single antigen
Adaptive immunity is sometimes also called acquired immunity. Which of the following statements
provides a basis for the alternative name?
To become activated, lymphocytes require exposure to the epitope for which they are specific.
Which of the following is an exogenous antigen?
a bacterium outside a cell
Which of the following is NOT included in the MALT?
the spleen
The white blood cells primarily responsible for adaptive immunity are
B lymphocytes and T lymphocytes
Which of the following statements concerning the chemical structure of an antibody is FALSE?
the heavy and light chains are connected by hydrogen bonds
The antibody-binding site of an antibody is made up of
the variable regions of both light and heavy chains
Cell-mediated immunity is a function of
T lymphocytes
Which of the following statements regarding antibody function is FALSE?
they can penetrate host cells to bind intracellular antigens
Secretory IgA antibodies are unique because they
are connected with J chains and short polypeptides to form dimers.
The most prevalent antibody class in the blood is
IgG
Which of the following function in agglutination?
IgA and IgG antibodies
Which of the following statements about T lymphocytes is FALSE?
T lymphocytes produce antibody molecules
Which of the following cytokines act as a signal between leukocytes?
interleukins
Major histocompatibility antigens are
autoantigens involved in epitope recognition.
The lymphocytes of adaptive immunity called ________ mature in the red bone marrow.
B cells
Class I MHC molecules are essential for
presentation of endogenous antigens.
Class II MHC are found on
professional antigen-presenting cells
Exogenous antigens are processed for immune recognition by ________ cells.
dendritic and macrophage
Which of the following statements concerning plasma cells is FALSE?
they live for many years and function as memory cells