What is respiration defined as?

Respiration is defined as the process that involves the ventilation of the lungs and the gas exchange that occurs in the alveoli. This process is crucial for supplying the body with oxygen, which is necessary for cellular metabolism, and for removing carbon dioxide, a waste product of metabolism. Ventilation refers to the movement of air in and out of the lungs, while gas exchange involves the transfer of oxygen from the air into the bloodstream and the transfer of carbon dioxide from the blood into the air in the lungs. This definition accurately encompasses the physiological processes involved in breathing and gas exchange, highlighting the integral role of the respiratory system in maintaining homeostasis and supporting cellular functions throughout the body.