Question

The parts of the lung affected by aging are

• A. Alveoli
• B. Pulmonary arteries
• C. Pulmonary veins
• D. All of the above

Answer 1

The correct option is D All of the above

With aging, muscles and other tissues that are near the airways lose their ability to keep the airways completely open. This causes airways to close easily. Aging also causes the alveoli to lose their shape and become baggy.

Aging may cause pulmonary venous hypertension, where there is an increased blood pressure in the pulmonary veins, which carry blood from the lungs to the heart. Also, aging may result in pulmonary arterial hypertension, where there is an increased blood pressure in the pulmonary arteries, which carry blood away from the heart to the lungs.

Thus, the correct answer is option (D).