Which of the Following Are Age-Related Changes in the Respiratory

Multiple Choice

Which of the following are age-related changes in the respiratory system? Select all that apply.

A) Lungs decrease in size and elasticity.
B) The cough reflex becomes more sensitive.
C) Alveoli enlarge, decreasing surface area available for gas exchange.
D) The vocal cords thin, producing a higher pitch in voice.
E) Production of mucus is increased.