The heart can be a 4-chambered hollow organ. It is actually separated into the proper and remaining sides by a muscular wall known as a septum. The correct and still left sides are even further divided into two higher chambers called atria (or atriums) and two reduced chambers named ventricles. https://desperately-need-money08655.blogdemls.com/36691124/examine-this-report-on-4200-loan