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 Are You realizes that he has to leave, as he's "gotta thousand little things I better do. Ah, but it was really good to talk to you. Be on my way, I'm bound to see you on the street again someday, and when I do I'll say How are you?" The reuniting theme of "How Are You" is also apparent in its follow-up single, "Lost and Found". "How Are You", like most Kinks tracks, is sung by Ray Davies. The track also, like many others on "Think Visual", makes use of synthesizers. "How Are You" was first released in November 1986 on