Asked in
Respiratory System

What are the functions of the respiratory system?


User Avatar
Wiki User
February 11, 2018 10:58AM

The main function of the respiratory system is to discard waste in the form of carbon dioxide and to take in oxygen. Carbon dioxide is carried to the lungs in erythrocytes (red blood cells) and released, then the erythrocytes collect oxygen and deliver this essential gas to our bodies. The mucus in the respiratory system helps to protect it as well as to carry debris out of the respiratory tract, which is assisted by the movements of little hair-like structures called cilia. Smoking causes the cilia to stop working and that is why smokers have coughs. It takes 28 days for the cilia to wake up and start working again after someone quits smoking. The cilia also help remove pollution.

The primary function of the respiratory system is to exchange gases. Oxygen is inhaled so the blood can carry it to the parts of the body, and carbon dioxide, a waste product, is breathed out

- a gas exchange system

- a transport system

- regulation of the pH and body fluids

- regulation of body temperature