A&P Exam 3 Multiple Choice

Small organs associated with lymphatic vessels are termed ________A) lymph follicles C) axillary nodes
B) lymph nodes D) cisterna chyli

B

Which of the following would not be classified as a lymphatic structure? A) pancreas C) tonsils
B) spleen D) Peyer’s patches of the intestine

A

The distal portion of the small intestine contains lymph follicles called ________. A) islets of Langerhans C) rugae
B) Peyer’s patches D) villi

B

Both lymph and venous blood flow are heavily dependent on ________
A) the pumping action of the heart
B) skeletal muscle contractions and differences in thoracic pressures due to respiratory movement
C) contraction of the vessels themselves D) two-way valves

B

The thymus is most active during ________
A) fetal development C) middle age B) childhood D) old age

B

Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax? A) lumbar trunk C) right lymphatic duct
B) thoracic duct D) cisterna chili

C

What effect does age have on the size of the thymus?
A) The size of the thymus increases continuously from birth to death. B) The size of the thymus decreases continuously from birth to death. C) The thymus is not affected by age.
D) The thymus initially increases in size and then decreases in size from adolescence through old age.

D

The lymphatic capillaries are ________.
A) more permeable than blood capillaries C) as permeable as blood capillaries B) less permeable than blood capillaries D) completely impermeable

A

Antibodies that act against a particular foreign substance are released by ________
A) T lymphocytes
B) plasma cells
C) lymph nodes
D) medullary cords

B

Lymph leaves a lymph node via ________. Page Ref: 757
A) efferent lymphatic vessels C) the cortical sinus
B) afferent lymphatic vessels D) the subscapular sinus

A

Which cells become immunocompetent due to thymic hormones? Page Ref: 759 A) basophils C) macrophages
B) T lymphocytes D) monocytes

B

Functions of the spleen include all of those below except ________. Page Ref: 758 A) removal of old or defective blood cells from the blood
B) forming crypts that trap bacteria
C) storage of blood platelets
D) storage of iron

B

When the lymphatic structures are blocked due to tumors, the result is ________. A) shrinkage of tissues distal to the blockage due to inadequate delivery of lymph
B) severe localized edema distal to the blockage
C) increased pressure in the lymphatics proximal to the blockage
D) abnormally high lymph drainage from the distal region

B

Select the correct statement about lymph transport. Page Ref: 754
A) Under normal conditions, lymph vessels are very high-pressure conduits.
B) Lymph transport is faster than that occurring in veins.
C) Lymph transport is only necessary when illness causes tissue swelling.
D) Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.

D

Select the correct statement about lymphocytes. Page Ref: 756
A) The two main types are T cells and macrophages.
B) B cells produce plasma cells, which secrete antibodies into the blood. C) T cells are the precursors of B cells.
D) T cells are the only form of lymphocyte found in lymphoid tissue.

B

Select the correct statement about lymphoid tissue. Page Ref: 756
A) Once a lymphocyte enters the lymphoid tissue, it resides there permanently. B) Lymphoid macrophages secrete antibodies into the blood.
C) Lymphoid tissue is predominantly reticular connective tissue.
D) T lymphocytes act by ingesting foreign substances.

C

Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) ________. Page Ref: 760
A) tonsil B) thymus C) Peyer’s patch D) appendix

A

Which of the following does not possess mucosa-associated lymphatic tissue?
A) tonsil B) thymus Page Ref: 758-760
C) Peyer’s patch D) appendix

B

Peyer’s patches are found in the ________.
A) duodenum of the small intestine
B) ileum of the small intestine
D) jejunum of the small intestine
C) large intestine

B

Lymph capillaries are absent in all but which of the following?
A) bones and teeth B) bone marrow C) CNS D) digestive organs

D

What is a bubo?
A) a wall in a lymph node B) a lobe of the spleen C) an infected Peyer’s patch D) an infected lymph

D

The thymus is the only lymphoid organ that does not: Page Ref: 759 A) have lymphocytes C) have a cortex and medulla
B) produce hormones D) directly interact with antigens

D

Large clusters of lymph nodes occur in all of the following locations except the ________. A) inguinal region C) axillary region
B) cervical region D) lower extremities

D

Digestive tract-associated lymphatic tissue includes all of the following except ________. A) Peyer’s patches C) lingual tonsils Page 760 B) palatine tonsils D) islets of Langerhans

D

Which of the following is not a method that maintains lymph flow? Page Ref: 754 A) skeletal muscle contraction C) valves in lymph vessel walls
B) breathing D) smooth muscle contraction

ALL ARE RIGHT

The tonsils located at the base of the tongue are the ________.
A) lingual tonsils C) pharyngeal tonsils B) palatine tonsils D) Peyer’s tonsils

A

Which of the following is not a normal component of lymph?
A) water
B) plasma proteins
C) red blood cells
D) ions

C

A sentinel node is ________.
A) a lymph node found in the intestinal lamina propria
B) the first node at the junction of all the lumbar trunks
C) a small node in the spleen
D) the first node to receive lymph from an area suspected to be cancerous

D

Which of the following are functions of lymphoid tissue?
A) house and provide a proliferation site for lymphocytes
B) house and provide a proliferation site for neutrophils
C) furnish an ideal surveillance vantage point for lymphocytes and macrophages

D

Which of the following is not a function of the lymphatic system? Page Ref: 753 A) draining excess interstitial fluid C) transporting dietary fats
B) carrying out immune responses D) transporting respiratory gases

D

Which of the following is characteristic of antibodies? Page Ref: 783 A) carbohydrate structure
B) composed of heavy and light polypeptide chains
C) three binding sites per antibody monomer
D) incapable of being transferred from one person to another

B

Which of the following is associated with passive immunity? Page Ref: 782 A) exposure to an antigen
B) infusion of weakened viruses
C) passage of IgG antibodies from a pregnant mother to her fetus
D) booster shot of vaccine

C

Which of the following is not a type of T cell?
A) cytotoxic
B) antigenic
C) helper
D) regulatory

B

B lymphocytes develop immunocompetence in the ________.
A) thymus
B) spleen
C) bone marrow
D) lymph nodes

C

Which of the following is not a function of the inflammatory response? Page Ref: 769 A) prevents the spread of the injurious agent to nearby tissue
B) replaces injured tissues with connective tissue
C) disposes of cellular debris and pathogens
D) sets the stage for repair processes

B

The redness and heat of an inflamed area are due to a local hyperemia caused by ________. A) vasodilation C) phagocyte mobilization
B) vasoconstriction D) production of complement and interferon

A

The antibody molecule is held together by ________ bonds. Page Ref: 783 A) disulfide B) hydrogen C) amino acid D) sodium

A

In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned? Page Ref: 780
A) antigen B) interferon C) antibody D) complement

A

Which of the following statements regarding NK cells is a false or incorrect statement? A) NK cells are a type of neutrophil.
B) NK cells are present in the blood, spleen, lymph nodes, and red bone marrow.
C) NK cells attack cells that display abnormal MHC antigens.
D) NK cells attack cancer cells and virus-infected body cells.

A