cells respiration

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• 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 — 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, human — ▪ physiology Introduction       the process by which oxygen is taken up and carbon dioxide discharged. The design of the respiratory system  The human gas exchanging organ, the lung, is located in the thorax, where its delicate tissues are… …   Universalium

• respiration — respirational, adj. /res peuh ray sheuhn/, n. 1. the act of respiring; inhalation and exhalation of air; breathing. 2. Biol. a. the sum total of the physical and chemical processes in an organism by which oxygen is conveyed to tissues and cells,… …   Universalium

• Respiration (physiology) — In animal physiology, respiration is the transport of Oxygen from the outside air to the cells within tissues and the transport of carbon dioxide in the opposite direction. This is in contrast to the biochemical definition of respiration, which… …   Wikipedia

• Respiration organ — Breathing / Respiration organs are used by most, or all, animals to exchange the gases necessary for their life functions, known as respiration. These organs come in many forms, some of them apparently having independently evolved:* skin some… …   Wikipedia

• 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 new mediacal dictionary

• respiration — noun Etymology: Middle English respiracioun, from Latin respiration , respiratio, from respirare Date: 15th century 1. a. the placing of air or dissolved gases in intimate contact with the circulating medium of a multicellular organism (as by… …   New Collegiate Dictionary

• respiration — res•pi•ra•tion [[t]ˌrɛs pəˈreɪ ʃən[/t]] n. 1) phl the act of respiring; inhalation and exhalation of air; breathing 2) biochem. a) the sum total of the physical and chemical processes by which oxygen is conveyed to tissues and cells and the… …   From formal English to slang

• Cellular respiration — in a typical eukaryotic cell. Cellular respiration is the set of the metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release… …   Wikipedia

• internal respiration — noun the metabolic processes whereby certain organisms obtain energy from organic molecules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be… …   Useful english dictionary