1. Which organ does not have lymphatic vessels?
a. Brain
b. Kidneys
c. Liver
d. Lungs
ANS: A
Lymphatic tissues are found abundantly throughout the body except in two places, the
placenta and the brain (central nervous system). Lymphatic tissues are found abundantly in the
kidneys, liver, and lungs.
2. Cells that line the lymph node sinuses perform the specific function of: a. fat absorption.
b. fetal immunization.
c. hematopoiesis.
d. phagocytosis.
ANS: D
Lymph nodes defend against the invasion of microorganisms by phagocytosis.
3. Lymph flows faster in response to: a. increased metabolic activity. b. decreased blood volume.
c. decreased metabolic rate.
d. decreased permeability of the capillary walls.
ANS: A
Lymph flow increases with mounting capillary pressure, greater permeability of the capillary walls, or
increased metabolic rate.
4. An organ that is essential to the development of protective immune function in the infant but has little
or no demonstrated function in the adult is the: a. spleen.
b. liver.
c. thymus.
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, d. pancreas.
ANS: C
In the adult, the thymus atrophies and, in the older adult, is replaced by fat and connective tissue.
5. Mr. Shea is a 45-year-old patient who presents to the office for multiple complaints. The examination
of the upper left quadrant of the abdominal cavity is essential to the evaluation of the immune system
because of the location of which organ? a. Spleen
b. Liver
c. Stomach
d. Pancreas
ANS: A
The spleen is the largest of the lymphatic organs. It is located in the upper left portion of the abdomen.
6. Mrs. Farrel brings in her 6-year-old son with complaints of a sore throat and fever. As the healthcare
provider, you are concerned about his tonsils and adenoids. Enlarged tonsils and adenoids may
obstruct the: a. thoracic duct.
b. esophagus.
c. nasopharyngeal passageway.NUR
d. external auditory meatus.
ANS: C
The palatine tonsils are located on either side of the pharynx; the adenoids (pharyngeal tonsils)
are found on the posterior wall of the pharynx and superior to the soft palate. If these structures
become enlarged, they block the passage between the pharynx and nasal cavity.
7. Mrs. Sing is a 44-year-old patient who presents to the office with a complaint of enlarged lymph
nodes. When enlarged, which lymph nodes are most likely to be a sign of pathology (e.g.,
malignancy)? a. Occipital
b. Anterior cervical
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