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
Which Bridge to Cross (Which Bridge to Burn) Which Bridge to Cross (Which Bridge to Burn) "Which Bridge to Cross (Which Bridge to Burn)" is a song co-written and recorded by American country music artist Vince Gill. It was released in January 1995 as the fourth single from the album "When Love Finds You". The song reached number 4 on the "Billboard" Hot Country Singles & Tracks chart. It was written by Gill and Bill Anderson. Deborah Evans Price, of "Billboard" magazine reviewed the song favorably calling it a "classic slow country waltz." She goes on to say that the song "makes optimum use of those classic changes