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
Brandon (given name) Brandon (given name) Brandon is a masculine given name which originates from two or possibly three separate sources, two Celtic, the other, Anglo-Saxon, and has historically been used by these different cultures independently. Today, most people with the name do not have any connection or lineage with any of these sources and use them as if they were the same name. In the instances of the Celtic origins, it is either a variant of the Irish masculine given name, Breandán, or descended from the Old Welsh name Brân, meaning "crow". The Anglo-Saxon origin is the surname "Brandon". The given name