An older client asks the nurse why "people my age" have weaker immune systems than younger people. What responses by the nurse are best? (Select all that apply.)
a. "Bone marrow produces fewer blood cells."
b. "You may have decreased levels of circulating platelets."
c. "You have lower levels of plasma proteins in the blood."
d. "Lymphocytes become more reactive to antigens."
e. "Spleen function declines after age 60."
ANS: A, C
The aging adult has bone marrow that produces fewer cells and decreased blood volume with fewer plasma proteins. Platelet numbers remain unchanged, lymphocytes become less reactive, and spleen function stays the same.
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