What is 1 cell in the nose/nasal cavity that is interesting and explain how it contributes to the respiratory system.

Squamous epithelial cells are flat cells embedded into the walls and make up most of your muscus membrane. There are several layers that protect each other. Like the muscus membrane, it protects dirt and large particles from entering the body, and prevents tissues form losing moisture.
Hope it helps :) 
Puffin

preindustrial

Explanation: