Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Muscle, heart
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
Muscle, heart: A type of muscle with unique features only found in the heart. The heart or cardiac muscle is medically called the myocardium ("myo-" being the prefix denoting muscle).