20. The Lymphatic System

The structural framework of lymphoid organs is:

a. Areolar connective tissue

b. Hematopoietic tissue

c. Reticular tissue

d. Adipose tissue

Stem cells responsible for lymphocytopoiesis are located in:

(a) The thymus and spleen

(b) The lymph nodes

(c) The red bone marrow

(d) All of these structures

Once almost a rite of childhood, tonsillectomy (surgical removal of the tonsils) is now rarely performed. Similarly, while ruptured spleens were once routinely removed, they are now conserved whenever possible. Why should these lymphoid organs be preserved when possible?

What is the primary function of red pulp in the spleen?

More than one choice may apply.

Which of the following are part of MALT?

a. Tonsils

b. Thymus

c. Peyer’s patches

d. Any lymphoid tissue along the digestive tract

Compare the structure and functions of a lymph node to those of the spleen.

Carla presents to her physician with a complaint of swollen axillary lymph nodes. Her physician performs a breast exam and finds a tumor on the same side as the swollen nodes.

b. Carla undergoes surgery to have the tumor and affected lymph nodes and surrounding lymphatic vessels removed. Predict any complications Carla might have after the surgery that could arise from removal of the lymph nodes and vessels.