Respiration may refer to:

Biology

Cellular respiration Cellular respiration is the process by which biological fuels are oxidised in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy, to drive the bulk production of ATP. Cellular respiration may be des ...

, the process in which nutrients are converted into useful energy in a cell **

Anaerobic respiration Anaerobic respiration is respiration using electron acceptors other than molecular oxygen (O2). Although oxygen is not the final electron acceptor, the process still uses a respiratory electron transport chain. In aerobic organisms undergoing re ...

, cellular respiration without oxygen **

Maintenance respiration Maintenance respiration (or maintenance energy) refers to metabolism occurring in an organism that is needed to maintain that organism in a healthy, living state. Maintenance respiration contrasts with growth respiration, which is responsible for t ...

, the amount of cellular respiration required for an organism to maintain itself in a constant state *

Respiration (physiology) In physiology, respiration is the movement of oxygen from the outside environment to the cells within Tissue (biology), tissues, and the transport, removal of carbon dioxide in the opposite direction that's to the environment. The physiological d ...

, transporting oxygen and carbon dioxide between cells and the external environment **

Respiratory system The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies grea ...

, the anatomical system of an organism used for respiration **

Breathing Breathing (or ventilation) is the process of moving air into and from the lungs to facilitate gas exchange with the internal environment, mostly to flush out carbon dioxide and bring in oxygen. All aerobic creatures need oxygen for cellular ...

, passing air in and out through respiratory organs **

Aquatic respiration Aquatic respiration is the process whereby an aquatic organism exchanges respiratory gases with water, obtaining oxygen from oxygen dissolved in water and excreting carbon dioxide and some other metabolic waste products into the water. Unicel ...

, animals extracting oxygen from water ** 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 Cheyne–Stokes respiration is 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. The pattern repe ...

, 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 * ''Respiration'', a journal by

Karger Publishers Karger Publishers (also: Karger Medical and Scientific Publishers, S. Karger AG) is an academic publisher of scientific and medical journals and books. The current CEO is Daniel Ebneter. History The company was founded in 1890 in Berlin by Sam ...

Ecology

* Carbon respiration, a concept used in calculating carbon (as ) flux occurring in the atmosphere *

Ecosystem respiration Ecosystem respiration is the sum of all respiration occurring by the living organisms in a specific ecosystem. The two main processes that contribute to ecosystem respiration are photosynthesis and cellular respiration. Photosynthesis uses carbon- ...

, measurement of gross carbon dioxide production by all organisms in an ecosystem * Root respiration, exchange of gases between plant roots and the atmosphere *

Photorespiration Photorespiration (also known as the oxidative photosynthetic carbon cycle or C2 cycle) refers to a process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, wasting some of the energy produced by photosynthesis. The desired reaction i ...

, enzymatic combination of RuBP with oxygen

Entertainment

* "Respiration" (song), a 1999 single by Black Star * "Respire" (song), a 2003 song by Mickey 3D * ''Respire'' (film), a 2014 French drama film {{disambiguation