Medical MCQs

A. Purkinje system
B. Bundle of his
C. Right and left bundle branches
D. Av node

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. Increased blood pressure, increased heart rate
B. Decreased b.p , decreased heart rate
C. Increased b.p, decreased heart rate
D. Decreased b.p, increased heart rate

A. Cardiac output and body weight
B. Cardiac output and body surface area
C. Cardiac output and work of the heart
D. Stroke volume and pulse rate

A. Isovolumetric contraction
B. Isovolumetric relaxation
C. Pre-diastole
D. Pre-systole

A. Av node
B. Sa node
C. Bundle of his
D. Purkinje fibers

A. Auto regulation
B. Hormones
C. Parasympathetic impulses
D. Sympathetic impulse

A. Sa node decreases firing
B. Increased av node excitability
C. Decreased ventricular contraction
D. Tachycardia

A. “p” wave
B. “q” wave
C. “r” wave
D. “t” wave

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