What happens to the number of goblet cells found 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

The number of goblet cells decreases as the respiratory tract moves from the upper conducting zone to the lower respiratory zone. This is because the primary function of goblet cells is to secrete mucus to trap particles in the upper respiratory tract, and this function becomes less necessary as air moves deeper into the lungs where there are fewer airborne particles to filter out.

What Happens to the Number of Goblet Cells Found in the Walls