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 ...

In order to supply more oxygen to the exercising cells, the body increases the rate and depth of breathing. The time taken for the breathing rate to return to normal is known as the recovery time.

The human body is made up of cells, which make up tissues, which in turn make up organs that form the basis of systems, all working together to keep us alive. Learn how body systems and their vital ...