as exercise levels increase, which of the following physiological changes occurs in the respiratory system…
as exercise levels increase, which of the following physiological changes occurs in the respiratory system? a. the respiratory muscles shrink. b. the lungs expand in size. c. the trachea widens. d. the airways narrow. please select the best answer from the choices provided.
Answer
Brief Explanations:
As exercise levels increase, the body needs more oxygen. The lungs adapt by expanding in size to take in more air. Respiratory muscles strengthen rather than shrink, the trachea doesn't widen significantly and airways don't narrow as a normal response to increased exercise.
Answer:
C. The lungs expand in size.