Abstract
From a standpoint of excitation and its direction, it is not open to question that all livingsystems can be classified into three fundamental systems as,“Typical Isodromical System”,“Atypical Isodromical System” and“Heterodromical System”
The present study has been carried out for verifying 1) Heterodromical System and 2)Typical Isodromical System.
Experimental Material: - 1) Winter frog and witer toad hearts were employed whose atrioventricular connection was maintained only by septa.
2) Summer toad hearts were employed whose atrioventricular connection was maintained only by the lateral part.
Method: - The same as Report I.
Result: - It was evidenced that“Heterodromical System” and“Typical Isodromical System”were present for all livingsystems.
