Atrium (heart) similar function. Some animals (amphibians and reptiles) have a three-chambered heart, in which the blood from each atrium is mixed in the single ventricle before being pumped to the aorta. In these animals, the left atrium still serves the purpose of collecting blood from the pulmonary veins. In some fish, the circulatory system is very simple: a two-chambered heart including one atrium and one ventricle. Among sharks, the heart consists of four chambers arranged serially (and therefore called a serial heart): blood flows into the most posterior chamber, the sinus venosus, and then to the atrium which moves it to
Berlin Heart unit. It moves the membranes, which draw blood into the blood chamber and push it back into the body. Like the heart, EXCOR blood pumps have valves which ensure that the blood only flows in one direction. The blood pumps are connected to the heart and blood vessels via silicone cannula. The EXCOR product range covers blood pumps and cannula of various sizes and types. While EXCOR Adult is specifically designed for adults, EXCOR Pediatric includes devices for young patients (from newborns to adolescents). In 2018 Chloe Caldwell became the first pediatric patient to be flown for a medical treatment