Atrium (heart) 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 that term is still used to describe this chamber in, for example, the "Mollusca", but in humans that name is
Henrietta (given name) Henrietta (given name) Henrietta is a feminine given name, derived from the male name Henry. The name is an English version of the French "Henriette", a female form of "Henri". A short version of the name is Harriet, which was considered the "spoken form" of Henrietta, much as Harry was considered the "spoken form" of Henry in medieval England. All these names are derived from Henrik, which is ultimately derived from the Germanic name "Heimiric", derived from the word elements "heim", or "home" and "ric", meaning "power, ruler." The male name Henry was first used in England by Normans. Henrietta