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?

The germinal centers in lymph nodes are largely sites ofa. macrophages,b. proliferating B lymphocytes,c. T lymphocytes,d. all of these.

In addition to its lymphoid function, which organ holds a reservoir of platelets?

Multiple ChoiceMore than one choice may apply.Where exactly does an antigen bind to an antibody molecule?a. b. c. d.

Identify the structures of the lymphatic system in the following diagram. a. ___b. ___c. ___d. ___e. ___f. ___g. ___h. ___i. ___j. ___k. ___l. ___m. ___n. ___o. ___p. ___q. ___

A friend tells you that she has tender, swollen 'glands' along the left side of the front of her neck. You notice that she has a bandage on her left cheek that is not fully hiding a large infected cut there. Exactly what are her swollen 'glands,' and how did they become swollen?

The spleen's white pulp is composed primarily of __________.

The lymphoid organ(s) located in the throat that defend(s) against invading bacteria coming in through the mouth and nose is/are __________.