Immune system

Question 1

Stem cells that will form T cells are modified in the
Select one:
a. bone marrow.
b. liver.
c. spleen.
d. thymus.
e. kidneys.

Answer 1

d. thymus

Question 2

Immunity that is genetically determined and present at birth is called \_\_\_\_\_\_\_\_\_\_\_\_ immunity
Select one:
a. active
b. natural passive
c. passive
d. auto
e. innate

Answer 2

e. innate

Question 3

The cells responsible for the production of circulating antibodies are \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ cells
Select one:
a. NK
b. plasma
c. helper T
d. cytotoxic T
e. suppressor T

Answer 3

e. NK (natural killer)

Question 4

All of the various macrophages are derived from
Select one:
a. lymphocytes.
b. monocytes.
c. neutrophils.
d. eosinophils.
e. basophils.

Answer 4

b. monocytes

Question 5

Characteristics of specific defenses include
Select one:
a. versatility.
b. tolerance.
c. memory.
d. specificity.
e. all of the above.

Answer 5

e. all of the above

Question 6

Lymph nodes do all of the following, except
Select one:
a. produce antibodies.
b. monitor the contents of lymph.
c. remove debris and pathogens from the lymph.
d. remove excess nutrients from the lymph.

Answer 6

d. remove excess nutrients from the lymph

Question 7

What is the name of the large lymphatic nodules that are located in the walls of the pharynx
Select one:
a. Tonsils
b. Lymph nodes
c. Immune complexes
d. Spleens

Answer 7

a. tonsils

Question 8

The cells responsible for humoral immunity are the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ cells
Select one:
a. NK
b. B
c. helper T
d. cytotoxic T
e. suppressor T

Answer 8

b. B

Question 9

Interleukins do all of the following, except
Select one:
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.

Answer 9

e. stimulate fibrin formation

Question 10

Inflammation produces localized
Select one:
a. swelling.
b. redness.
c. heat.
d. pain.
e. all of the above

Answer 10

e all of the above

Question 11

Lymphocytes are located in each of the following tissues or organs, except the
Select one:
a. tonsils.
b. spleen.
c. lymph nodes.
d. brain.
e. thymus gland.

Answer 11

d. brain

Question 12

The lymphatic system does all of the following, except
Select one:
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.

Answer 12

b. transports gases to an from lymph nodes

Question 13

Immunity that results from antibodies that pass the placenta from mother to fetus is called \_\_\_\_\_ immunity
Select one:
a. active
b. natural passive
c. passive
d. auto
e. innate

Answer 13

d. natural passive

Question 14

The primary function of the lymphatic system is
Select one:
a. circulation of nutrients.
b. the transport of hormones.
c. the production, maintenance, and distribution of lymphocytes.
d. the production, maintenance, and distribution of plasma proteins.
e. both C and D

Answer 14

c. the production, maintenance, and distribution of lymphocytes

Question 15

One major difference between a virus and a parasite is that
Select one:
a. viruses are killed with antibiotics.
b. viruses usually live within a cell and then destroy their host.
c. parasites live within a cell more often than viruses.
d. both A and C
e. none of the above

Answer 15

b. viruses usually live within a cell and then destroy their host

Question 16

Cells that help regulate the immune response are \_\_\_\_\_\_\_\_\_\_\_\_\_ cells
Select one:
a. B
b. plasma
c. helper T
d. cytotoxic T
e. NK

Answer 16

d. cytotoxic T

Question 17

The binding of an antigen to an antibody can result in
Select one:
a. neutralization of the antigen.
b. agglutination or precipitation.
c. complement activation and opsonization.
d. all of the above
e. A and B only

Answer 17

d. all of the above

Question 18

The effects of activating the complement system include all of the following, except
Select one:
a. destruction of target cell membranes.
b. stimulation of inflammation.
c. deactivation of the immune response.
d. opsonization.
e. chemotaxis.

Answer 18

c. deactivation of the immune response

Question 19

Lymphoid stem cells that can form all types of lymphocytes occur in the
Select one:
a. bloodstream.
b. thymus.
c. bone marrow.
d. spleen.
e. intestines.

Answer 19

c. bone marrow

Question 20

Lymphocytes are produced and stored in all of the following, except
Select one:
a. the tonsils.
b. lymphoid tissues.
c. lymphoid organs.
d. the spleen and thymus.
e. the kidneys.

Answer 20

e. the kidneys

Question 21

Lymphocytes that attack foreign cells or body cells infected with viruses are \_\_\_\_\_\_\_\_\_\_\_\_ cells
Select one:
a. B
b. plasma
c. helper T
d. cytotoxic T
e. suppressor T

Answer 21

d. cytotoxic T

Question 22

Lymphocyte production involves
Select one:
a. bone marrow.
b. thymus tissue.
c. peripheral lymphoid tissues.
d. all of the above
e. none of the above

Answer 22

e. none of the above (stem cells)

Question 23

Examples of physical barriers that you have against pathogens include
Select one:
a. sebaceous glands.
b. hair.
c. epithelium.
d. epidermal surface of the skin.
e. all of the above

Answer 23

e. all of the above

Question 24

The cells that are actively involved in immunological surveillance are the \_\_\_\_\_ cells
Select one:
a. NK
b. plasma
c. B
d. helper T
e. suppressor T

Answer 24

a. NK (natural killer)

Question 25

``` The lymphatic system is composed of all of the following, except Select one: a. lymphatic vessels. b. the thyroid gland. c. the spleen. d. lymph nodes. e. lymph. ```

Answer 25

b. thyroid gland

Question 26

Regulatory (a.k.a suppressor) T cells act to Select one: a. suppress antigens. b. limit the degree of memory in memory T cells. c. limit antigen proliferation. d. depress the responses of other T cells and B cells. e. produce antibodies involved in autoimmunity.

Answer 26

d. depress the responses of other T and B cells