It helps us to breathe more comfortable.
fresh clean air
mucus
Mucus in the nose helps trap particles entering the respiratory system. The hairs/cilia of the respiratory system also filter incoming air.
The system that exchanges oxygen and carbon dioxide between blood and air is the respiratory system. This process occurs in the lungs, where oxygen is taken in from the air we breathe and carbon dioxide is released from the blood into the air we exhale.
the cilia filtrate the air going into the system
Air sacs are part of the respiratory system
Respiratory System
the respiratory system
The respiratory system is the organ system that moves air into and out of your body.
The respiratory system does not contain any structure that filters air. The trachea and bronchus are lined with a mucous membrane that helps trap debris and carry it out of the body, but this is not a filtration system.
Air can be taken into the respiratory system at the mouth and the nose.
It happens to keep the respiratory system clean.