Self-Test
(Check your answers in Appendix C.)
1. HIV specifically targets______.
a. cytotoxic T cells
b. helper T cells
c. plasma cells
d. B cells
Use this figure to answer questions 2-4.
2. The organ shown is______.
a. a lymphatic vessel
b. the spleen
c. the thymus
d. a lymph node
3. The vessels leading into the organ on the left are which of the
following?
a. afferent lymphatic vessels
b. lymphatic capillaries
c. lymphatic ducts
d. efferent lymphatic vessels
4. What does this organ do?
a. produce T cells
b. produce B cells
c. filter lymph
d. pump lymph
5. Which of the following drains interstitial fluid from 75%
of the
body's area?
a. inferior vena cava
b. right lymphatic duct
c. left lymphatic duct
d. thoracic duct
6. An allergic response is an exaggerated example of which of
the following?
a. inflammation
b. immunological memory
c. innate defense
d. passive immunity
7. Where do T cells form and mature?
a. spleen
b. lymph nodes
c. thoracic duct
d. thymus
8. Interferon is a defense against which of the following?
a. bacteria
b. virus
c. fungi
d. venom
Use this figure to answer questions 9-12.
9. The cellular process shown in step A is which of the following?
a. Pinocytosis
b. Phagocytosis
c. Receptor-mediated endocytosis
d. Secretion
368 CHAPTER 12
The Lymphatic System and Immunity
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