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
Nea (given name) official name day for Nea, Neea, Linnea and Vanamo. Nea (given name) Nea and Neea are Finnish female given names. The name has been in the Finnish Almanac since 1995, but the name has been considerably in use much earlier. At the end of 2015 according to the Population Register Center, approximately 7,140 women have been named Nea and 3,110 women have been named Neea. Nea and Neea are shortened versions of Linnea which is a female given name of Swedish origin. The name Linnea is linked to the famous 18th-century Swedish scientist Carl Linnaeus, who was ennobled as Carl