What is the process of ventilation?
Ventilation refers to the movement of air into and out of the lungs. The process of ventilation involves several steps, including: Inspiration: During inspiration, the diaphragm contracts and moves downwards, while the intercostal muscles between the ribs contract and lift the rib cage up and outwards. This increases the volume of the chest cavity and reduces the pressure inside the lungs, causing air to flow in.