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
Brendan (given name) Brendan (given name) Brendan is an Irish masculine given name in the English language. It is derived from the Gaelic name Breandán, which is in turn derived from the earlier Old Irish Brénainn. The Old Welsh "breenhin" is the root of the name, meaning Prince or King. The mediaeval Latin form of the name, Brendanus, has also influenced the modern English and Irish forms. Variant spellings of "Brendan" are Brendon and Brenden. In some cases it is possible that the given name "Brandon" is also a variant of "Brendan". A variant spelling of the Irish "Breandán" is Breanndán. The English