Cardiovascular system revision - MCQs
What is the most dominant artery of coronary circulation ?
- Left Circumflex Artery
- Left Coronary Artery
- Right Coronary Artery
- Left Anterior Descending Artery
0 voters
What is the Pacemaker of the heart ?
- Bundle of His
- AV node
- SA node
- Purkinje Fibers
0 voters
Normal range of heart rate ________ ?
- 50 - 80 beats/min
- 60 - 90 beats/min
- 50 - 90 beats/min
- 60 - 100 beats/min
0 voters
Second heart sound is produced by
- Closure of Mitral valve
- Closure of Aortic valve
- Closure of Pulmonary valve
- Closure of Tricuspid valve
0 voters
Sympathetic stimulation of the heart results in
- Increase in Heart Rate
- Increase in Cardiac Ouput
- Increase in Peripheral Vascular resistance
- All of the above
0 voters
What does P wave in ECG correspond to
- Atrial Repolarization
- Atrial Depolarization
- Ventricular Repolarization
- Ventricular Depolarization
0 voters
What is the only vein that carries oxygenated blood
- Cephalic vein
- Brachial vein
- Pulmonary vein
- Basilic vein
0 voters
What is the duration of Atrial systole in Cardiac cycle if the heart rate is 75 beats/min
- 0.3 seconds
- 0.1 seconds
- 0.2 seconds
- 0.8 seconds
0 voters
What are the afferents for baroreceptor reflex
- VI and VIIth Cranial nerve
- VII and VIIIth Cranial nerve
- VIII and IXth Cranial nerve
- IX and Xth Cranial nerve
0 voters
Factors regulating Cardiac Output
- Venous Return
- Contractility of the heart
- Heart Rate
- All of the above
0 voters