Physiology Mcqs

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

A. Aorta
B. Arteries
C. Capillaries
D. Venules

A. Venules
B. Arterioles
C. Capillaries
D. Precapillary sphincters

A. Peripheral resistance X tissue fluid
B. Peripheral resistance X cardiac rate
C. Blood pressure X cardiac rate
D. Heart rate X blood volume

A. “P” wave
B. “Q” wave
C. “R” wave
D. “T” wave

A. SA node decreases firing
B. Increased AV node excitability
C. Decreased ventricular contraction
D. Tachycardia

A. Closure of the pulmonary valve
B. Rapid filling of the left ventricle
C. Closure of the aortic valve
D. Contraction of the atria

A. Measures the change in Po2 in arterial blood
B. Measures Po2 in venous blood
C. Measures the changed in CO2 in arterial blood
D. Measures the change in CO2 in venous blood

A. Volume of the circulation per minute
B. Peripheral vascular resistance
C. Pulse Pressure
D. Total Capacity

A. 1 to 4 m/sec
B. 5 to 8 m/sec
C. 9 to 12 m/sec
D. More than 12 m/sec