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.
metabolism The totality of the body's cellular chemical activity, largely under the influence of enzymes, that results in work and growth or repair. The âbuilding-upâ aspects of metabolism are known as anabolic and the âbreaking-downâ as catabolic.