One complete heart beat, during which both atria and ventricles contract and relax, is termed _____ and is marked by a succession of changes in _____ and _____. within the heart the cardiac cycle, blood volume, pressure
Pan vs. Epi(demic) Good to know: An âepidemicâ is simply a proliferation of an infectious disease beyond that normally observed. A âpandemicâ is an epidemic that spreads across regions or continents. The number of dead is not part of the definition. Indeed, a pandemic may kill no one at all. October 27, 2009
Epi- definition, a prefix occurring in loanwords from Greek, where it meant âupon,â âon,â âover,â ânear,â âat,â âbefore,â âafterâ (epicedium; epidermis; epigene; epitome); on this model, used in the formation of new compound words (epicardium; epinephrine). See more.