3. Which structures in the nasal cavity remove some

bacteria and dust from outside air before it enters the

lungs?

If it goes in the nostrils the air is warmed and humidified. The tiny hairs) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.

Ciliated mucous membranes.

Explanation:

The mucosa present in the conductive part of the respiratory system is covered by a specialized epithelium called the respiratory epithelium, formed by a columnar ciliated pseudo-stratified epithelium with the presence of many goblet cells. The mucosa of this region has an important role in the defense of the organism, being rich in isolated lymphocytes and lymph nodes, in addition to plasmocytes and macrophages.

This region is known as ciliated mucous membranes and is responsible for removing some bacteria and dust from outside air before entering the lungs.