Page 464 - Atlas of Histology with Functional Correlations

E. filter blood and remove antigens from it.

3. The white pulp of the spleen consists mainly of:

A. connective tissue and reticular fibers.

B. white blood cells and red blood cells.

C. lymphocytes and macrophages around the central artery.

D. blood sinusoids and blood vessels.

E. connective tissue trabeculae and fibers.

4. The immune system organ that exhibits both an afferent and efferent
lymph vessel is the:

A. lymph node.

B. spleen.

C. thymus.

D. tonsil.

E. lymphatic nodule.

5. The spleen is also a hematopoietic organ. When does this function take
place?

A. During the life of the individual

B. During severe infection and immune response

C. Right after birth

D. During fetal life

E. Following severe blood loss

ANSWERS

1. Correct Answer: A. Lymphocytes that recognize foreign antigens survive
and reach maturity. These cells then enter the medulla and are distributed in

blood to other lymphatic sites.

2. Correct Answer: E. The main function of red pulp in the spleen is to filter
blood and remove antigens from it.

3. Correct Answer: C. The white pulp of the spleen consists mainly of

lymphocytes and macrophages around the central artery. These cells form
the periarteriolar lymphatic sheaths (PALS) around the central artery.

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