results in development of results in development of cardiac conduction system development The process whose specific outcome is the progression of the cardiac conduction system over time, from its formation to the mature structure. The cardiac conduction system consists of specialized cardiomyocytes that regulate the frequency of heart beat. biological_process 2009-10-01T01:57:16Z GO:0003161 dph heart conduction system development cardiac impulse conducting system development cardiac muscle tissue development anatomical structure development conducting system of heart