Sense the Working of Your Heart 1 (a) Yes – it is due to ventricular systole. There may be a short time delay but it should be the same rate. 1(b) mood, stress, exercise, activity, hormones, diet, posture, health 2(a) lubb-dupp? 2(b) No - The heart sounds will precede the pulse by a short interval. It takes a short moment for the blood to surge through the arteries and create a pulse.