Respiration and breathing are two related but distinct processes that are involved in the exchange of gases between the body and the environment.
Breathing, also known as ventilation, is the physical process of inhaling and exhaling air. It involves the movement of air into and out of the lungs through the airways, such as the trachea, bronchi, and bronchioles. Breathing is driven by the contraction and relaxation of muscles, primarily the diaphragm and intercostal muscles. The main purpose of breathing is to bring oxygen into the body and remove carbon dioxide from the body.
Respiration, on the other hand, is the process of exchanging gases between the body and the environment. It involves the uptake of oxygen from the air by the lungs and the release of carbon dioxide from the body into the air. Respiration occurs at the cellular level, within the mitochondria of cells, where oxygen is used to produce energy through a process called cellular respiration. This process involves the breakdown of glucose molecules to release energy, with carbon dioxide and water as byproducts.
In summary, breathing is the physical process of moving air in and out of the lungs, while respiration is the process of exchanging gases between the body and the environment, including the uptake of oxygen by the body and the release of carbon dioxide from the body. Breathing is necessary for respiration to occur, as it provides the means to bring oxygen into the lungs and remove carbon dioxide from the body.
