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
Rosie (given name) Rosie (given name) Rosie is a feminine given name of English origin. It is a diminutive form of the English language given name Rose, which is of Latin origin. Similar diminutives in other languages include: ' becoming ' in Spanish, and ' becoming ' in Slavic languages. Rosie is a nickname for variations of "Rose" such as "Rosalie", "Rosemary", "Roseanne", "Rosalyn", and others. Historically, Rosie has been a reasonably popular given name for infants in England and Wales during the early 21st century, as it was in Victorian times. It continues to be popular in Scotland, as well. However, it