miocardio
/ˈkaβle ðe ˌinteɾfˈaθ ðˌixitˈal pˌaɾa ˌinstɾumˈɛntos mˌusikˈales ˈmiði/
n
English: myocardium · 心肌
Significado：Thick muscular casing around the heart; its contraction is involuntary and depends on the autonomous nervous system.