Ch 22 Lymphatic System
The cells responsible for cellular immunity are the _____ cells.
cytotoxic T
Immunity that is genetically determined and present at birth is called _____ immunity.
innate
The release of interleukin-1 by active macrophages would
produce a fever
The cells responsible for humoral immunity are the _____ cells.
B
The medullary cords of a lymph node contain _____ cells.
B
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.
Brain
Stem cells that will form T cells are modified int the
Thymus
The term lymphadenopathy refers to
a chronic or excessive enlargement of lymph nodes
All of the following are true of the thymus gland, except that it A) activates B cells. B) reaches its greatest size relative to body size during the first to second year of life. C) undergoes involution after puberty. D) produces T cells. E) lies behind the sternum in the anterior mediastinum.
activates B cells
Immunity that results from the natural exposure to an antigen in the environment is called _____ immunity.
active
The classic pathway of complement fixation occurs when C1 binds to
an antibody attached to an antigen
Compared to blood capillaries, lymph capillaries exhibit all of the following, except that they A) have no basement membrane. B) are larger in diameter. C) have walls of endothelial cells that overlap like shingles. D) are not held in place by a loose connective-tissue framework. E) are frequently irregular in shape.
are not held in place by a loose connective tissue framework
In active immunization, the
body is deliberately exposed to an antigen
Stem cells that will form B cells and NK cells are found in the
bone marrow
Each of the following is a physical barrier to infection, except A) body hair. B) epithelium. C) secretions. D) complement. E) basement membranes.
complement
Lymphocytes that attack foreign cells or body cells infected with viruses are _____ cells.
cytotoxic T
The effects of activating the complement system include all of the following, except A) destruction of target cell membranes. B) stimulation of inflammation. C) deactivation of the immune response. D) opsonization. E) chemotaxis.
deactivation of the immune response
Suppressor T cells act to
depress the responses of the other T and B cells
Cells that help regulate the immune response are _____ cells.
helper T
The "white pulp" of the spleen is composed of
lymphocytes
The "red pulp" of the spleen contains large numbers of
macrophages
All of the various macrophages are derived from
monocytes
Immunity that results from antibodies that pass the placenta from mother to fetus is called _____ immunity.
natural passive
Microphages include
neutrophils
The first line of cellular defense against pathogens are the
phagocytes
The cells responsible for the production of circulating antibodies are _____ cells.
plasma
The cells known as lymphocytes
produce proteins called antibodies
Lymph nodes do all of the following, except that they A) produce antibodies. B) monitor the contents of lymph. C) remove debris and pathogens from the lymph. D) act as a "way station" for cancer cells. E) remove excess nutrients from the lymph.
remove excess nutrients from the lymph
Defense of the body against a particular bacteria or virus is provided by
specific immunity
In general, lymphocytes
spend little time in blood, have relatively long life spans (A & B only)
The lymphatic system is composed of all of the following, except A) lymphatic vessels. B) the thyroid gland. C) the spleen. D) lymph nodes. E) lymph
the thyroid gland
The lymphatic system does all of the following, except that it A) helps maintain normal blood volume. B) transports gases to and away from lymph nodes. C) eliminates variations in the composition of interstitial fluid. D) transports lipids from the digestive tract. E) fights infection.
transports gasses to and away from lymph nodes
Characteristics of specific defenses include
versatility, tolerance, memory, specificity, all of the above
Areas of the spleen that contain large numbers of lymphocytes are known as
white pulp