👉 Serrature is a medical term that refers to the internal structure of the heart. It consists of two chambers, the left and right atriums, as well as the mitral valve and a portion of the tricuspid valve. The serrature is composed of the septum, which is made up of three layers: the outer septum, the middle septum, and the inner septum. In addition to its role in the heart's pumping function, serrature plays a crucial