The system in living organisms that takes up oxygen and discharges carbon dioxide in order to satisfy energy requirements. The respiratory system consists of all the organs involved in breathing. These include the nose, pharynx, larynx, trachea, bronchi and lungs. The respiratory system does two very important things: it brings oxygen into our bodies, which we need for our cells to live and function properly; and it helps us get rid of carbon dioxide, which is a waste product of cellular function.In humans the respiratory tract is the part of the anatomy involved with the process of respiration.The respiratory tract is divided into 3 segments:upper respiractory tract,Respiratory airways,Lungs.The respiratory tract is a common site for infections.
"Antitussive: The antitussive ingredients in medicines stop you from coughing.
Mucolytic: Similar to an expectorant, Mucolytic drugs work to thin, loosen and eventually clear your airways of mucus.
Expectorant: An expectorant is a medicine that works to thin mucus in the lungs, trachea and bronchi to make it easier to expel it."