Question: Consider the following statements________________?

• 1. Starling’s law of heart states that increase in force of contraction is directly related to cardiac ouput
• 2. Staling’s law of heart states that the force of ventricular contraction is directly related to the end diastolic volume
• 3. Both A and B
• 4. None of the above

Question: Minimum blood pressure is in_____________?

• 1. Aorta
• 2. Arteries
• 3. Capillaries
• 4. Venules

Question: The largest function of the total peripheral resistance is due to _________________?

• 1. Venules
• 2. Arterioles
• 3. Capillaries
• 4. Precapillary sphincters

Question: Cardiac output is a measure of______________?

• 1. Peripheral resistance X tissue fluid
• 2. Peripheral resistance X cardiac rate
• 3. Blood pressure X cardiac rate
• 4. Heart rate X blood volume

Question: The ventricular repolarization in ECG is best seen in_______________?

• 1. “P” wave
• 2. “Q” wave
• 3. “R” wave
• 4. “T” wave

Question: Parasympathetic stimulation of heart causes______________?

• 1. SA node decreases firing
• 2. Increased AV node excitability
• 3. Decreased ventricular contraction
• 4. Tachycardia

Question: The dicrotic notch on the aortic pressure curve is caused by_________________?

• 1. Closure of the pulmonary valve
• 2. Rapid filling of the left ventricle
• 3. Closure of the aortic valve
• 4. Contraction of the atria

Question: The function of Carotid body is_______________?

• 1. Measures the change in Po2 in arterial blood
• 2. Measures Po2 in venous blood
• 3. Measures the changed in CO2 in arterial blood
• 4. Measures the change in CO2 in venous blood

Question: What is common between systemic and pulmonary circulation is_____________?

• 1. Volume of the circulation per minute
• 2. Peripheral vascular resistance
• 3. Pulse Pressure
• 4. Total Capacity

Question: The velocity of conduction in the Purkinjie fibers of the heart is__________________?

• 1. 1 to 4 m/sec
• 2. 5 to 8 m/sec
• 3. 9 to 12 m/sec
• 4. More than 12 m/sec