👉 The term "cleithral" refers to a specific type of organ in the human body that is involved in the regulation and function of the heart. Specifically, it is an organ located at the base of the left atrium (the valve between the right ventricle and the left ventricle) and the superior vena cava. This organ is responsible for regulating blood pressure and ensuring that oxygenated blood reaches the heart muscle cells in the walls of the heart. The function of the
