Heart depending on what is counted as a chamber. The atrium and ventricle are sometimes considered "true chambers", while the others are considered "accessory chambers". Primitive fish have a four-chambered heart, but the chambers are arranged sequentially so that this primitive heart is quite unlike the four-chambered hearts of mammals and birds. The first chamber is the sinus venosus, which collects deoxygenated blood from the body through the hepatic and cardinal veins. From here, blood flows into the atrium and then to the powerful muscular ventricle where the main pumping action will take place. The fourth and final chamber is the
Emilia (given name) Emilia (given name) Emilia is a feminine given name of Romanic origin. The name is found all over Europe and the Americas. The corresponding masculine name is Emil or Emilio. Emilia is also referenced as the Italian form of the English name, Emily. Emilia is a feminine given name derived from "Aemilia", the feminine form of the Latin nomen "Aemilius". The name is likely derived from the same root as the Latin word "aemulus", which means to rival, excel, or emulate, but this may be a folk etymology. Although similar Germanic names like Amalia may appear to be related to