121.  Which of the following is NOT an aging effect of the lymphatic system and immunity?  
A.  Fluid removal by the lymphatic capillaries is reduced.
B.  Fewer antibodies are produced.
C.  Onset of autoimmune diseases is unchanged.
D.  T cell numbers remain constant but they are less functional.

122. What does “A” represent on the diagram? 
A. spleen
B. thymus
C. axillary lymph node
D. inguinal lymph node
E. thoracic duct

123. What does “B” represent on the diagram? 
A. spleen
B. thymus
C. axillary lymph node
D. inguinal lymph node
E. thoracic duct

124. What does “C” represent on the diagram? 
A. spleen
B. thymus
C. axillary lymph node
D. inguinal lymph node
E. thoracic duct

125. What does “D” represent on the diagram? 
A. spleen
B. thymus
C. axillary lymph node
D. inguinal lymph node
E. thoracic duct

126. What does “E” represent on the diagram? 
A. spleen
B. thymus
C. axillary lymph node
D. inguinal lymph node
E. thoracic duct

127.  This diagram illustrates the effects of antibodies. What effect does “A” represent?  
A.  activation of complement cascade
B.  facilitation of phagocytosis
C.  initiates release of inflammatory chemicals
D.  binds antigens together
E.  inactivation of antigens

128. This diagram illustrates the effects of antibodies. What effect does “B” represent? 
A. activation of complement cascade
B. facilitation of phagocytosis
C. initiates release of inflammatory chemicals
D. binds antigens together
E. inactivation of antigens

129. This diagram illustrates the effects of antibodies. What effect does “C” represent? 
A. activation of complement cascade
B. facilitation of phagocytosis
C. initiates release of inflammatory chemicals
D. binds antigens together
E. inactivation of antigens

130. This diagram illustrates the effects of antibodies. What effect does “D” represent? 
A. activation of complement cascade
B. facilitation of phagocytosis
C. initiates release of inflammatory chemicals
D. binds antigens together
E. inactivation of antigens