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
Rose (given name) of Old English rōse from the Latin rosa; phonetically linked to the Greek rhódon, which is independent of the etymology of the surname Rose. Distinctions can sometimes be made between individuals who derive this given name after the surname and those who are named after the flower. Rhoda, as in Acts 12:12-15, is the Greek equivalent. Rosalia was the name of a 12th-century Sicilian saint. St. Rose of Lima was the first person born in the Americas to be canonized. Rose (given name) Rose is a given female name. It is a late Latin name derived from "rosa", meaning "rose".