Atrium (heart) of blood occurs. In birds, mammals, and some other reptiles (alligators in particular) the partitioning of both chambers is complete. Atrium (heart) The atrium is the upper chamber in which blood enters the heart. There are two atria in the human heart – the left atrium connected to the lungs, and the right atrium connected to the venous circulation. The atria receive blood, and when the heart muscle contracts they pump blood to the ventricles. All animals with a closed circulatory system have at least one atrium/auricle (humans have two atria). The atrium used to be called the "auricle", and
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".