noun
cardiac muscle; heart muscle; myocardium
Anatomical term for the muscle tissue of the heart. Used in medical and biological contexts.
心筋梗塞は心筋に血液が届かなくなる病気です。
Myocardial infarction is a condition in which blood stops reaching the heart muscle.
心筋は不随意筋で、自分の意思では動かせない。
Cardiac muscle is involuntary muscle and cannot be moved at will.