Medical Dictionary. arrhythmia. play. noun arÂ·rhythÂ·mia \Ä-Ërith-mÄ-É\. Medical Definition of arrhythmia. : an alteration in rhythm of the heartbeat either in time or force.
Central metabolism provides mechanisms for the generation of energy from carbon-energy source catabolism and the production of biosynthetic precursors and intermediates for the anabolic pathways essential to maintain cell structure and function.
Like ordinary combustion, the metabolism of food requires a supply of oxygen and produces carbon dioxide as a combustion product. For various foods one can state a representative energy yield, an amount of oxygen required, and an expected amount of carbon dioxide released. Here are some values from Nelson.