Heart valve chambers are lined with endocardium. Heart valves separate the atria from the ventricles, or the ventricles from a blood vessel. Heart valves are situated around the fibrous rings of the cardiac skeleton. The valves incorporate leaflets or cusps, which are pushed open to allow blood flow and which then close together to seal and prevent backflow. The mitral valve has two cusps, whereas the others have three. There are nodules at the tips of the cusps that make the seal tighter. The pulmonary valve has left, right, and anterior cusps. The aortic valve has left, right, and posterior cusps. The
For We Are Many For We Are Many For We Are Many (sometimes written as …For We Are Many) is the fifth studio album by the heavy metal band All That Remains. Released on October 12, 2010, it is the third album by the band to be produced by the Killswitch Engage guitarist, Adam Dutkiewicz, who also produced "This Darkened Heart" and "The Fall of Ideals". "For We Are Many" is the first All That Remains album to contain the same line-up as the preceding album, a tradition that would continue up through 2015's "The Order of Things". On August 18, 2010, the band