Distribution of blood flow is mainly regulated by the________________?
A. Arteries
B. Arterioles
C. Capillaries
D. Venules
Physiology Mcqs
Effect on force of contraction of heart is_____________?
Effect on force of contraction of heart is_____________?
A. Chronotropic effect
B. Dromotropic effect
C. Bathmotropic
D. Ionotropic effect
Cardiac output is maximum to _________________?
Cardiac output is maximum to _________________?
A. Liver
B. Brain
C. Kidney
D. Heart
Absolute period when whole heart is in diastole is______________?
Absolute period when whole heart is in diastole is______________?
A. 0.7 seconds
B. 0.3 seconds
C. 0.7 seconds
D. 0.4 seconds
Cardiac cycle duration in man is_______________?
Cardiac cycle duration in man is_______________?
A. 0.4 seconds
B. 0.8 seconds
C. 1.2 seconds
D. 1.6 seconds
Coronary blood flow is usually predominantly controlled by_____________?
Coronary blood flow is usually predominantly controlled by_____________?
A. Auto regulation
B. Hormones
C. Parasympathetic impulses
D. Sympathetic impulse
Fastest conducting tissue in human heart _________________?
Fastest conducting tissue in human heart _________________?
A. AV node
B. SA node
C. Bundle of His
D. Purkinje fibers
Closure of aortic valve occurs before the following event_______________?
Closure of aortic valve occurs before the following event_______________?
A. Isovolumetric contraction
B. Isovolumetric relaxation
C. Pre-diastole
D. Pre-systole
Cardiac index is related to ______________?
Cardiac index is related to ______________?
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
Stimulation of barorceptor leads to ________________?
Stimulation of barorceptor leads to ________________?
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