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
Dolores (given name) nickname for individuals named Dolores, based on the name's second syllable. Dolores (given name) Dolores is a feminine given name of Spanish origin. In an etymological sense, the name Dolores from the Spanish word "dolores", which is the plural form of "dolor", meaning either sorrow or pain, and word can be traced even further back, into Latin. However, the usage of Dolores as a given name has its origins in the strong influence that the Roman Catholic Church has on Spain and, by extension, Spanish-speaking countries. The name is a reference to Nuestra Señora de los Dolores, one of the