respiration

n.
the process of gaseous exchange between an organism and its environment. This includes both external respiration, which involves breathing, in which oxygen is taken up by the capillaries of the lung alveoli and carbon dioxide is released from the blood, and internal respiration, during which oxygen is released to the tissues and carbon dioxide absorbed by the blood. Blood provides the transport medium for the gases between the lungs and tissue cells. In addition, it contains a pigment, haemoglobin, with special affinity for oxygen. Once inside the cell oxygen is utilized in metabolic processes resulting in the production of energy (see ATP), water, and waste materials (including carbon dioxide).
See also: lung
Derivatives:
respiratory adj.

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  • RESPIRATION — La physiologie comparée de la respiration a pour objet l’étude des mécanismes assurant les échanges de l’oxygène et du dioxyde de carbone (gaz carbonique) entre les organismes vivants et le milieu, aqueux et aérien, dans lequel ils vivent.… …   Encyclopédie Universelle

  • Respiration — Res pi*ra tion (r?s p?*r? sh?n), n. [L. respiratio: cf. F. respiration. See {Respire}.] 1. The act of respiring or breathing again, or catching one s breath. [1913 Webster] 2. Relief from toil or suffering: rest. [Obs.] [1913 Webster] Till the… …   The Collaborative International Dictionary of English

  • Respiration — is the act of inhaling and exhaling air in order to exchange oxygen for carbon dioxide. * * * 1. A fundamental process of life, characteristic of both plants and animals, in which oxygen is used to oxidize organic fuel molecules, providing a… …   Medical dictionary

  • respiration — Respiration. s. f. v. L action de respirer, la faculté par laquelle on respire. Il n a pas la respiration libre. le poulmon & les autres parties qui servent à la respiration …   Dictionnaire de l'Académie française

  • Respiration — (v. lat.), 1) das Athemholen; daher Respirationsmuskeln, die das Athmen durch Erweiterung u. Verengung der Brusthöhle vermittelnden Muskeln, bes. die Brustmuskeln. Respirationswege, die der atmosphärischen Luft für das Athemholen zugänglichen… …   Pierer's Universal-Lexikon

  • Respiration — (lat.), s. Atmung …   Meyers Großes Konversations-Lexikon

  • Respiration — Respiratiōn (lat.), Atmung (s.d.); respirābel, einatembar, zum Einatmen dienlich oder tauglich …   Kleines Konversations-Lexikon

  • Respiration — ⇒ Atmung …   Deutsch wörterbuch der biologie

  • respiration — фр. [рэспирасьо/н] respirazione ит. [рэспирацио/нэ] 1) дыхание 2) знаки перемены дыхания в вокальных партиях …   Словарь иностранных музыкальных терминов

  • respiration — early 15c., from L. respirationem, noun of action from respirare (see RESPIRE (Cf. respire)) …   Etymology dictionary

  • respiration — ► NOUN 1) the action of breathing. 2) a single breath. 3) Biology a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic… …   English terms dictionary


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