PATHOLOGY

Detailed explanation-1: -When you breathe out, or exhale, your diaphragm and rib muscles relax, reducing the space in the chest cavity. As the chest cavity gets smaller, your lungs deflate, similar to how air releases from a balloon.

Detailed explanation-2: -When you inhale (breathe in), air enters your lungs, and oxygen from that air moves to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out). This process, called gas exchange, is essential to life.

Detailed explanation-3: -This dome-shaped muscle that stretches across your torso is called the diaphragm (die-uh-fram) and when your diaphragm is relaxed, it resembles an oblong umbrella top that is squeezed underneath your ribs and creates the base of your chest cavity.