Atrium (heart) now used for an appendage of the atrium. Humans have a four-chambered heart consisting of the right atrium, left atrium, right ventricle, and left ventricle. The atria are the two upper chambers. The right atrium receives and holds deoxygenated blood from the superior vena cava, inferior vena cava, anterior cardiac veins and smallest cardiac veins and the coronary sinus, which it then sends down to the right ventricle (through the tricuspid valve) which in turn sends it to the pulmonary artery for pulmonary circulation. The left atrium receives the oxygenated blood from the left and right pulmonary veins, which it
Riley (given name) (Descendent of/Of Raghallach) which was later adapted in English as O'Reilly which itself has been anglicised into "Reilly". The surname "Riley" is a translated version of Reilly; which evolved over time. It currently is #8 in England and Wales, #9 in Northern Ireland, #15 in Scotland, #30 in Australia and New Zealand, #64 in Canada, #156 in the United States, and #198 in the Netherlands. Riley (given name) Riley is a unisex given name, which first appeared as "Raghallach", which was originated on a man who died in the Battle of Clontarf. Its source gives its meaning as "valiant". Riley