The valves involving the atria and ventricles are called the atrioventricular valves. Between the right atrium and the proper ventricle may be the tricuspid valve. The tricuspid valve has 3 cusps,[22] which hook up with chordae tendinae and three papillary muscles named the anterior, posterior, and septal muscles, soon after https://lordr013gec3.birderswiki.com/user