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
Hanif (given name) Hanif (given name) Hanif (Arabic: حنيف) is an Arabic masculine given name, which means a righteous person or a true believer. The origin of the word is uncertain, although it is generally agreed that it is derived from the Syriac word "hanpe", which means 'heathen'. It is generally agreed that the word Ḥanīf (plural: ḥunafā') is derived from the Syriac word "hanpe", which means 'heathen'. However, there is no credible theory which can explain the transformation of the term's meaning – from heathen to monotheist. Nabataeans used Hanif's cognate to designate a follower of Hellenized religion. And Nabataean is generally