5.4 Review Questions

6. Which structure allows lymph from the lower right limb to enter the bloodstream?
a. thoracic duct
b. right lymphatic duct
c. right lymphatic trunk
d. left lymphatic trunk

7. Which of the lymphoid nodules is most likely to see food antigens first?
a. tonsils
b. Peyer’s patches
c. bronchus-associated lymphoid tissue
d. mucosa-associated lymphoid tissue

8. The elimination of self-reactive thymocytes is called ____.
a. positive selection.
b. negative selection.
c. tolerance.
d. clonal selection.