Parts of the model represent different parts of the respiratory system as shown here. The model, which is air tight, represents the thorax, and air is only able to enter via the glass tube which ...

An upper respiratory infection (URI) is inflammation in the sinuses, nose, throat, larynx, and pharynx and is most often caused by over 200 common cold viruses ... Handwashing with soap removes germs ...

Upper respiratory infection (URI ... including your nose, sinuses, throat (pharynx), and voice box (larynx). Common types, some of which are contagious, include the common cold, influenza ...

An upper respiratory infection (URI) is a group of infections that affects any part of your upper airways, including the nose ...