ANATOMY

Detailed explanation-1: -The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.

Detailed explanation-2: -Breathing is a physical process involving inhalation and exhalation. Respiration is responsible for breaking down food to release energy. Exhalation during breathing helps to get rid of the carbon dioxide richair.

Detailed explanation-3: -The process of inhalation is the intake of oxygen-rich air through the nostrils into the lungs. During inhalation, the diaphragm present at the base of the chest cavity moves downward. The rib bones move upward and outward. This also includes intercostal muscles contracting to increase the chest cavity.