Author Question: During an infection, lymph nodes enlarge and become tender because: a. lymphocytes are rapidly ... (Read 88 times)

EAugust · **on:** Jun 25, 2018

During an infection, lymph nodes enlarge and become tender because:

a. lymphocytes are rapidly dividing.
b. edema accumulates within the fibrous capsule.
c. microorganisms are accumulating.
d. the nodes are not functioning properly.

Question 2

A group of cells isolated in the laboratory have membrane-bound granules in their cytoplasm, and they show phagocytic activity. Which of the following cells is most similar?

a. Monocyte
b. Macrophage
c. Lymphocyte
d. Eosinophil

wuly · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

ANS: A
During an infection, the rate of proliferation of lymphocytes within the nodes is so great that the nodes enlarge and become tender. Edema may be present, but the tenderness is due to prolifera-tion of lymphocytes and is a normal function of the nodes. The tenderness is not due to the mi-croorganisms.

Answer to Question 2

ANS: D
Eosinophils, which have large, coarse granules, are capable of ameboid movement and phagocy-tosis. Monocytes help fight infection. Macrophages are mature monocytes. Lymphocytes are the primary cells of the immune response.