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.
Superficial Siderosis of the Central Nervous System is when iron salt deposits accumulate on the brain surface, spinal cord and or cranial nerves. The hard iron salt core is created from chronic bleeding into the subarachnoid space or brain surface, in underneath the three protective membranes.