Stimulation of baroreceptors results in_______________?
Stimulation of baroreceptors results in_______________? A. Increase in heart rate B. Decreased vagal discharge C. Increased sympathetic dischargeD. Decrease in blood pressure
Stimulation of baroreceptors results in_______________? A. Increase in heart rate B. Decreased vagal discharge C. Increased sympathetic dischargeD. Decrease in blood pressure
2nd heart sound is characterized by all except______________? A. Due to closure of semilunar valves B. Is occasionally splitC. Has longer duration than 1st heart sound D. Marks the onset of diastole
Heart muscle, true are all except_______________? A. Act as syncytiumB. Has multiple nuclei C. Has gap junctions D. Has branching
Isovolumetric relaxation ends immediately after________________? A. AV Valve closes B. When ventricular pressure falls below aortic pressureC. When ventricular pressure falls below atrial pressure D. None of the above
Ventricular muscle receives impulses directly from the_______________? A. Purkinje system B. Bundle of HIS C. Right and left bundle branches D. AV node
Distribution of blood flow is mainly regulated by the________________? A. ArteriesB. Arterioles C. Capillaries D. Venules
Effect on force of contraction of heart is_____________? A. Chronotropic effect B. Dromotropic effect C. BathmotropicD. Ionotropic effect
Cardiac output is maximum to _________________? A. Liver B. Brain C. Kidney D. Heart
Absolute period when whole heart is in diastole is______________? A. 0.7 seconds B. 0.3 seconds C. 0.7 secondsD. 0.4 seconds
Cardiac cycle duration in man is_______________? A. 0.4 secondsB. 0.8 seconds C. 1.2 seconds D. 1.6 seconds