Which of the following is NOT an effect of aging on the immune system?
A) Vital capacity increases slightly as the lungs become less elastic.
B) Gas exchange rates decrease.
C) Mucous in the respiratory passages becomes thicker and harder for cilia to move.
D) The inspiratory reserve volume decreases.
E) Alveolar ducts and bronchioles increase in diameter increasing the amount of dead space.
Correct Answer:
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