The cardiac output is normalized to physique dimensions as a result of entire body area region which is called the cardiac index. When the ventricle is total, the tricuspid valve shuts. This helps prevent blood from flowing backward in the atria when the ventricle contracts. An internal layer (serous pericardium) https://checkmatecheckcashingelca17265.blog5.net/83130608/4200-loan-for-dummies