👉 The term "ventricularis" refers to a type of muscle in the heart that is primarily responsible for pumping blood back and forth through the left atrium, which is the opening of the heart. This type of muscle is called a ventricularis and it is divided into two main groups: atrioventricular (AV) and septal (SE). The AV group contains the right atrium, while the SE group contains the right ventricle.
