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 theseRelated 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 calledHeart 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: