Multiple choice In a frog's heart, the cardiac muscles which consist of fibres are called as Purkinje fibres Telodendria Columnae carnae Myonemes - Reveal answer Fill a bubble to check yourself A Correct answer Explanation Purkinje fibres are the specialized cardiac muscle fibres which are a part of the impulse-conducting network of the heart that rapidly transmits impulses from the atrioventricular node to the ventricles.