In physiology, respiration is defined as the movement of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
The physiological definition of respiration should not be confused with the biochemical definition, which refers to cellular respiration, a metabolic process by which an organism obtains energy (in the form of ATP) by oxidizing nutrients and releasing waste products. Although physiologic respiration is necessary to sustain cellular respiration and thus life in animals, the processes are distinct: cellular respiration takes place in individual cells of the organism, while physiologic respiration concerns the bulk flow and transport of metabolites between the organism and the external environment.
Gaseous exchange (which in organisms with lungs is called ventilation and includes inhalation and exhalation) is a part of physiologic respiration. Thus, in precise usage, the words breathing and ventilation are hyponyms, not synonyms, of respiration; but this prescription is not consistently followed, even by most health care providers, because the term respiratory rate (RR) is a well-established term in health care, even though it would need to be consistently replaced with ventilation rate if the precise usage were to be followed.
Respiration (physiology) Wikipedia
There are several ways to classify the physiology of respiration:Aquatic respiration
Arterial blood gas
Control of respiration
Huff and puff
Selected ion flow tube mass spectrometry
Bell Jar Model Lung
Sudden Infant Death Syndrome
Severe acute respiratory syndrome
Pulmonary aspiration - Pulmonary edema
Intensive care medicine
Hyperbaric oxygen therapy
Carbon dioxide poisoning
Carbon monoxide poisoning