On The within, the heart is usually a 4-chambered, hollow organ. It is split into your remaining and proper facet by a wall known as the septum. The proper and left sides of the heart are even more divided into two major chambers called the atria (plural of atrium), which https://carderl789trn6.jts-blog.com/35738782/5-simple-statements-about-4200-loan-explained