P-wave in the electrocardiogram is produced by: Circulatory System Physiology Mcqs November 23, 2019 BILAL KHATTAK0 A.Beginning of ventricular relaxation B.Beginning of ventricular contraction C.Activation of SA-Node D.None of these Related Mcqs: P-wave in electrocardiogram is produced by: Chordae tendinae connecting dorsal and ventral flaps of atrioventricular valve in from help in: Node of Tawara in rabbit’s heart is: At rest the mammalian eye is focused for distant objects by: Secretin hormone secreted by duodenal wall, on reaching blood stimulates: A coastal current, parallel to the shores produced by wave refraction is called Heart beat in man is initiated by: Which of these structures is respobsible for conducting heart beat in rabbit’s heart: Pace-maker in heart of man influences: Principle pacemaker in mammalian heart is: