Lymphe/immune 5

Question 1

Leslie has a bad sore throat and the lymph
glands in her neck are swollen. This would
indicate that
A. the focus of the infection is the lymph glands.
B. lymph is not flowing through these lymph glands.
C. the affected lymph glands contain an increased
number of lymphocytes.
D. the lymph gland is actively producing phagocytes.
E. the lymph gland has increased its secretion of
thymosin.

Answer 1

C. the affected lymph glands contain an increased

number of lymphocytes.

Question 2

The medullary cords of a lymph node
contain \_\_\_\_\_ cells.
A.	cytotoxic T
B.	suppressor T
C.	NK
D.	B
E.	nodule

Answer 2

D. B

Question 3

One major difference between a virus and
a parasite is that
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 3

B. viruses usually live within a cell and then

destroy their host.

Question 4

The body’s nonspecific defenses include
all of the following, except
A.	the skin.
B.	complement.
C.	interferon.
D.	inflammation.
E.	antibodies.

Answer 4

E. antibodies.

Question 5

When an antigen is bound to a Class I
HLA molecule, it can stimulate a \_\_\_\_\_
cell.
A.	B
B.	plasma
C.	helper T
D.	cytotoxic T
E.	NK

Answer 5

D. cytotoxic T

Question 6

Neil accidentally ingests a substance that
activates the complement factor C1 in the
absence of bound antibodies. This substance
would
A. produce a fever.
B. cause extensive cellular damage.
C. increase circulation of lymph.
D. activate blood clotting.
E. block inflammation from occurring.

Answer 6

B. cause extensive cellular damage.

Question 7

Stem cells that will form B cells and NK
cells are found in the
A.	bone marrow.
B.	liver.
C.	spleen.
D.	thymus.
E.	kidneys.

Answer 7

A. bone marrow.

Question 8

The body’s lymphocytes are produced and
stored in all of the following, except
A.	the tonsils.
B.	lymphoid tissues.
C.	lymphoid organs.
D.	the spleen and thymus.
E.	the kidneys.

Answer 8

E. the kidneys.

Question 9

Each of the following is a physical barrier
to infection, except
A.	body hair.
B.	epithelium.
C.	secretions.
D.	complement.
E.	basement membranes.

Answer 9

D. complement.

Question 10

A sample of John’s blood shows a high
level of pyrogens. This would indicate that
John
A.	has hypotension.
B.	is producing T lymphocytes.
C.	has a sore throat.
D.	is running a fever.
E.	has swollen lymph nodes.

Answer 10

D. is running a fever.

Question 11

Class II HLA molecules are found only
attached to which of the following?
A.	all body cells with a nucleus
B.	red blood cells
C.	granulocytes and microphages
D.	lymphocytes and macrophages
E.	liver cells and macrophages in the spleen

Answer 11

D. lymphocytes and macrophages

Question 12

Lymphocytes that attack foreign cells or
body cells infected with viruses are \_\_\_\_\_
cells.
A.	B
B.	plasma
C.	helper T
D.	cytotoxic T
E.	suppressor T

Answer 12

D. cytotoxic T

Question 13

Lymphatic capillaries are known for
A.	beginning the lymphatic network.
B.	being the smallest lymphatic vessels.
C.	having large diameters and thinner walls than
veins.
D.	being lined by endothelial cells.
E.	all of the above

Answer 13

E. all of the above

Question 14

An inflammatory response is triggered
when
A.	red blood cells release pyrogens.
B.	T cells release interferon.
C.	mast cells release histamine, serotonin, and
heparin.
D.	neutrophils phagocytize bacteria.
E.	blood flow to an area increases.

Answer 14

C. mast cells release histamine, serotonin, and

heparin.

Question 15

When an antigen is bound to a Class II
HLA molecule, it can stimulate a \_\_\_\_\_
cell.
A.	plasma
B.	helper T
C.	NK
D.	suppressor T
E.	cytotoxic T

Answer 15

B. helper T

Question 16

Cells that help regulate the immune
response are \_\_\_\_\_ cells.
A.	B
B.	plasma
C.	helper T
D.	cytotoxic T
E.	NK

Answer 16

C. helper T

Question 17

Lymphatic vessels commonly occur in
association with
A.	peripheral nerves.
B.	blood vessels.
C.	skin grafts.
D.	sensory nerve endings.
E.	both A and C

Answer 17

B. blood vessels.

Question 18

In an experiment, Roger injects some mice with
interleukin II, and after 3 days he examines the
blood and lymph for changes. What would you
expect to observe following this treatment?
A. decreased number of T cells
B. increased number of T cells
C. decreased number of B cells
D. increased number of mast cells
E. both A and D

Answer 18

B. increased number of T cells

Question 19

The release of interleukin-1 by active
macrophages would
A.	cause inflammation.
B.	produce a fever.
C.	activate complement.
D.	result in opsonization of pathogens.
E.	result in B-cell producing antibodies

Answer 19

B. produce a fever.

Question 20

Stromal cells produce an immune system
hormone or cytokine called interleukin-7,
which promotes the differentiation of T
cells.
A.	True
B.	False

Answer 20

B. False

Question 21

There is nothing to separate lymphoid
organs such as the thymus and spleen
from surrounding tissues.
A.	True
B.	False

Answer 21

B. False