The surface area of a human lung is made larger by alveoli and is approximately the size of a?

• a. Dinner plate
• b. Tablespoon
• c. 4-person tent
• d. Tennis court

The surface area of a human lung is significantly increased by the presence of tiny air sacs called alveoli. This adaptation allows for more efficient gas exchange. When considering the size of the lung's surface area, it is approximately the size of a d. Tennis court.

Why a Tennis Court?

The extensive network of alveoli in the lungs provides a vast area for oxygen and carbon dioxide exchange, comparable to the large surface area of a tennis court, which is about 260 square meters.

Key Points

• Alveoli increase lung surface area.
• Efficient gas exchange is crucial for respiration.
• The total surface area of lungs is roughly equivalent to a tennis court.