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
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