A man who has smoked for over 20 years develops emphysema. Explain what emphysema is and how it…

A man who has smoked for over 20 years develops emphysema. Explain what emphysema is and how it affe… Show more A man who has smoked for over 20 years develops emphysema. Explain what emphysema is and how it affects the lung volumes/capacities. How does smoking affect the natural defenses in the respiratory system? Be sure to relate the effects to the emphysema. • Show less