Respiration

Respiration may refer to:

Biology

• Respiratory system, the anatomical system of an organism used for respiration
• Cellular respiration, the process in which nutrients are converted into useful energy in a cell
• Respiration (physiology) and breathing, the physiological process that enables animals to exchange carbon dioxide, the primary product of cellular respiration, for fresh air
• Anaerobic respiration, cellular respiration without oxygen
• Aquatic respiration, the process of animals extracting oxygen from water
• Maintenance respiration, the amount of cellular respiration required for an organism to maintain itself in a constant state
• Artificial respiration, the act of simulating respiration, which provides for the overall exchange of gases in the body by pulmonary ventilation, external respiration and internal respiration
• Cheyne-Stokes respiration, an abnormal pattern of breathing characterized by progressively deeper and sometimes faster breathing, followed by a gradual decrease that results in a temporary stop in breathing called an apnea

Ecology

• Carbon respiration, a concept used in calculating carbon (as CO₂) flux occurring in the atmosphere
• Ecosystem respiration, measure of gross carbon dioxide production by all organisms in an ecosystem
• Root respiration, exchange of gases between plant roots and the atmosphere
• Photorespiration, the process by which RuBP (a sugar) has oxygen added to it by the main enzyme involved in photosynthesis, rubisco, instead of carbon dioxide as happens during photosynthesis

Entertainment

• "Respiration" (song), a 1999 hip hop group single by Black Star
• "Respire" (Mickey 3D song), released in March 2003