The mucus produced by the epithelial cells serves to trap dust particles, and the cilia gradually push them back out.
It happens to keep the respiratory system clean.
Pollutants in the air, inhaling smoke from cigarettes, etc are harmful to the respiratory system.
Air enters the the respiratory tract through either the nose or mouth.
The bronchi are passages that direct air into the lungs, which are the main organs of the respiratory system. Inside of the lungs, each bronchus divides into smaller and smaller tubes, resembling the branches of a tree. At the end of the tubes are the alveoli, which are the tiny sacs of lung tissue specialized for the movement of gases between air and blood.
The air entering your lungs should be at 100% humidity (at body temperature), (Your nose is designed to take care of that.) If not, then the respiratory tissues (closest to your mouth & nose) will be dried out - and they can't function if desiccated. Thus, a part of your respiratory system will be non-functional.
fresh clean air
mucus
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.
Mucus in the nose helps trap particles entering the respiratory system. The hairs/cilia of the respiratory system also filter incoming air.
air sacs
lungs
It helps us to breathe more comfortable.
the Bronchioles, Air sacs and the Diaphragm
The cardio-respiratory system consists of the cardio vascular system (heart and blood vessels) together with respiratory system (lungs and air ways).anything other than those are NOT component of the The cardio-respiratory system.
No, the circulatory system is the system of blood passageways. Passageways that have to do with breathing are parts of the respiratory system.
the cilia filtrate the air going into the system
The blood delivers Oxygen from the respiratory system to the digestive system and the other parts of the body as it travels around the body to give the air to go around us and breathe healthily