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 Things in Glocca Morra? How Are Things in Glocca Morra? "How Are Things in Glocca Morra?" is a popular song about a fictional village in Ireland, with themes of nostalgia and homesickness. It was introduced by Ella Logan in the original Broadway production of "Finian's Rainbow". The music was composed by Burton Lane and the lyrics were written by E.Y. Harburg. The song was published in 1946 and introduced in the 1947 musical "Finian's Rainbow". There is no actual Glocca Morra in Ireland (though there is a Glockamara). In a television interview late in his life, Harburg revealed that the name "Glocca Morra" was