A microscopic view of false tendons in the left ventricle of the human heart.

Research was conducted on material consisting of 45 fetal, newborn, infant and adult human hearts. False tendons in fetal, newborn and infant hearts were made up of mainly heart muscle tissue. False tendons of the tendon attachment to the interventricular septum. These false composed of muscle tissue and connective tissue in various proportions. Most of the connective tissue was observed in this age group in the area of the tendin attachment to the interventricular septum. These false tendons turned out to be very richly vascularized. In some of them, elements of the conductive system was confirmed, being an extension of the left branch of the bundle of His. This may confirm the role of false tendons in heart arrhythmias.