noun
atrioventricular septum
Anatomical term for the wall separating the atria and ventricles in the heart.
房室中隔は心臓の心房と心室を隔てる壁です。
The atrioventricular septum is the wall that separates the atria and ventricles of the heart.
Compound of 房室 (atrium and ventricle) + 中隔 (septum).