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
How to Be a Human Being How to Be a Human Being How to Be a Human Being is the second studio album by English indie rock group Glass Animals. It was released on 26 August 2016 by Wolf Tone and Caroline International in Europe, and Harvest Records in the United States. The album received critical acclaim for its "sense of wonder", and "immediate impression", though it was also met with some mixed reactions, from critics who felt it was somewhat premature. There are a total of 11 songs on the track listing, along with 11 characters illustrated on the cover art. Each song, along with