MICROANATOMY

Detailed explanation-1: -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: -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.

Detailed explanation-3: -Final answer: Breathing is the process of taking in oxygen and releasing carbon dioxide.

Detailed explanation-4: -Oxygen helps organisms grow, reproduce, and turn food into energy. Humans get the oxygen they need by breathing through their nose and mouth into their lungs. Oxygen gives our cells the ability to break down food in order to get the energy we need to survive.