Multiple Choice
Changes in the immune system that accompany aging include all of the following except
A) T cells becoming less responsive to antigens.
B) fewer cytotoxic T cells responding to infections.
C) decreased numbers of T helper cells.
D) more efficient secondary responses.
E) B cells are less responsive.
Correct Answer:
Verified
Correct Answer:
Verified
Q17: The cells directly responsible for cellular immunity
Q18: Stem cells that will form B cells
Q19: Helper T cells do all of the
Q20: Compared to blood capillaries, lymph capillaries exhibit
Q21: A _ antigen is an antigen with
Q23: An important protein in the activation of
Q24: All of the following are characteristics of
Q25: Another term for antibodies is<br>A) cytokines.<br>B) cytosolic
Q26: When an antigen is bound to a
Q27: Lymphocytes that destroy foreign cells or virus-infected