Question 1

Lymph is propelled through the lymph vessels by the force of the heartbeat.

Accepted Answer

A) True 
 B)False

Question 2

Is it possible for lymphocytes to gain immunocompetence in the thymus of an 82-year-old person?

Accepted Answer

A)   Yes, but the thymus has shifted to the production of B lymphocytes.
B)   Yes, but fewer than in youth.
C)   No, because the thymus has completely degenerated.
D)   No, because all lymphocytes have turned into thymic corpuscles.E) None of the above
F) All of the above

Question 3

Figure 21.1
Use the diagram above to answer the following questions.
-Identify the letter that indicates a vessel that carries oxygenated blood to peripheral tissues.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and D)
G) B) and E)

Question 4

By secreting hormones, the thymus causes which cells to become immunocompetent?

Accepted Answer

A)   T lymphocytes
B)   B lymphocytes
C)   macrophages
D)   monocytesE) B) and C)
F) A) and B)

Question 5

A patient with lymphangitis presents with visible red lines on the skin that are tender to the touch. The best explanation for this sign is that

Accepted Answer

A)   lack of movement has caused pooling of lymph in the vessels, which compromised the lymphatic valves, resulting in varicose lymph vessels.
B)   red blood cells have infiltrated the lymphatic system.
C)   the spleen has overdegraded red blood cells, releasing iron into the lymphatic system.
D)   the vasa vasorum on the surface of infected lymph vessels has become inflamed and congested with blood.E) B) and D)
F) None of the above

Question 6

Lymphocyte ________ results in immune cells that have gained the ability to attack specific antigens.

Accepted Answer

The answer of Lymphocyte ________ results in immune cells that...

Question 7

Duct of the lymphatic system that drains the body's entire lower half.

Accepted Answer

A)   lumbar trunk
B)   intestinal trunk
C)   bronchomediastinal trunk
D)   thoracic duct
E)   right lymphatic ductF) A) and C)
G) B) and E)

Question 8

The thymus is the only lymphatic organ that does not directly fight antigens.

Accepted Answer

A) True 
 B)False

Question 9

Epithelial cells within the thymus secrete hormones that are important to lymphocyte development.

Accepted Answer

A) True 
 B)False

Question 10

Which cell has the responsibility of presenting foreign antigens to lymphocytes?

Accepted Answer

A)   cytotoxic CD8⁺ T lymphocyte
B)   dendritic cell
C)   helper CD4⁺ T lymphocyte
D)   natural killerE) None of the above
F) A) and D)

Question 11

Lymphoid tissue associated with the digestive, respiratory, urinary, and reproductive tracts.

Accepted Answer

A)   aggregated lymphoid nodules
B)   tonsils
C)   MALT
D)   lacteals
E)   cryptsF) B) and D)
G) C) and E)

Question 12

The right lymphatic duct drains the intestinal trunk.

Accepted Answer

A) True 
 B)False

Question 13

Set of lymphatic capillaries that collect fat-laden fluids from the intestinal tract.

Accepted Answer

A)   lumbar trunks
B)   subclavian trunks
C)   bronchomediastinal trunks
D)   lacteals
E)   intestinal trunkF) B) and D)
G) B) and C)

Question 14

Lymphocytes attack antigens mostly in lymphoid organs (except the thymus)  and in

Accepted Answer

A)   loose connective tissue.
B)   the bloodstream.
C)   cartilage.
D)   the thyroid.E) A) and B)
F) B) and C)

Question 15

Tumorlike lesions of the skin and some internal organs caused by a type of herpesvirus is called ________.

Accepted Answer

The answer of Tumorlike lesions of the skin and some...

Question 16

Describe the process of T cell activation and the significance of the blood-thymus barrier.

Accepted Answer

Immature lymphocytes that originate in t...

Question 17

Crypts of the tonsils

Accepted Answer

A)   are filled with lymphoid tissue.
B)   are specialized lymphatic capillaries.
C)   contain all the progeny of a single activated B lymphocyte.
D)   trap bacteria and particulate matter.E) All of the above
F) C) and D)

Question 18

Lymph capillaries are absent from the central nervous system.

Accepted Answer

A) True 
 B)False

Question 19

Begins at the cisterna chyli.

Accepted Answer

A)   thymic corpuscles
B)   aggregated lymphoid nodules
C)   thoracic duct
D)   MALT
E)   inguinal lymph nodesF) A) and D)
G) A) and C)

Question 20

Small, bean-shaped organs abundant in the cervical, axillary, and inguinal regions.

Accepted Answer

A)   lymphatic capillaries
B)   afferent lymphatic vessels
C)   lymphatic ducts
D)   lymph nodes
E)   lactealsF) A) and E)
G) B) and C)

Exam 21: The Lymphatic and Immune Systems

Is it possible for lymphocytes to gain immunocompetence in the thymus of an 82-year-old person?

Correct AnswerverifiedShow Answer

Describe the process of T cell activation and the significance of the blood-thymus barrier.

Correct AnswerverifiedImmature lymphocytes that originate in t...View AnswerShow Answer

Figure 21.1 Use the diagram above to answer the following questions. -Identify the letter that indicates a vessel that carries oxygenated blood to peripheral tissues.

Correct AnswerverifiedShow Answer

Tumorlike lesions of the skin and some internal organs caused by a type of herpesvirus is called ________.

Correct AnswerverifiedShow Answer

The thymus is the only lymphatic organ that does not directly fight antigens.

Correct AnswerverifiedShow Answer

Lymph capillaries are absent from the central nervous system.

Correct AnswerverifiedShow Answer

Lymphoid tissue associated with the digestive, respiratory, urinary, and reproductive tracts.

Correct AnswerverifiedShow Answer

Crypts of the tonsils

Correct AnswerverifiedShow Answer

The right lymphatic duct drains the intestinal trunk.

Correct AnswerverifiedShow Answer

Duct of the lymphatic system that drains the body's entire lower half.

Correct AnswerverifiedShow Answer

Set of lymphatic capillaries that collect fat-laden fluids from the intestinal tract.

Correct AnswerverifiedShow Answer

Begins at the cisterna chyli.

Correct AnswerverifiedShow Answer

A patient with lymphangitis presents with visible red lines on the skin that are tender to the touch. The best explanation for this sign is that

Correct AnswerverifiedShow Answer

Small, bean-shaped organs abundant in the cervical, axillary, and inguinal regions.

Correct AnswerverifiedShow Answer

Lymphocyte ________ results in immune cells that have gained the ability to attack specific antigens.

Correct AnswerverifiedShow Answer

Lymph is propelled through the lymph vessels by the force of the heartbeat.

Correct AnswerverifiedShow Answer

Epithelial cells within the thymus secrete hormones that are important to lymphocyte development.

Correct AnswerverifiedShow Answer

Lymphocytes attack antigens mostly in lymphoid organs (except the thymus) and in

Correct AnswerverifiedShow Answer

Which cell has the responsibility of presenting foreign antigens to lymphocytes?

Correct AnswerverifiedShow Answer

By secreting hormones, the thymus causes which cells to become immunocompetent?

Correct AnswerverifiedShow Answer

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Immature lymphocytes that originate in t...
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