What happens to the amount of cartilage in the walls of the respiratory tract as it moves down from the upper conducting zone to the lower respiratory zone?

Question

Quizplus · Accepted Answer

As the respiratory tract moves from the upper conducting zone to the lower respiratory zone, the amount of cartilage decreases, allowing for more flexibility and gas exchange in the lower parts of the respiratory system.

What Happens to the Amount of Cartilage in the Walls