Source:http://linkedlifedata.com/resource/umls/id/C0018819
MSH: This structure includes the thin muscular atrial septum between the two HEART ATRIA, and the thick muscular ventricular septum between the two HEART VENTRICLES.,CSP: thin membranous structure between the two heart atria or the thick muscular structure between the two heart ventricles.,NCI: The tissue in the heart that separates the two atria (atrial septum) and the two ventricles (ventricular septum).,FMA: Septum of organ which has as its parts the membranous and muscular parts that separates the right side of the heart from the left side of the heart.,NCI: The tissue in the heart that separates the two atria (atrial septum) and the two ventricles (ventricular septum). (NCI)