Increase in carotid sinus pressure produces__________________? A. Reflex hyperpneaB. Reflex Hypercapnia C. Reflex tachycardia D. Reflex Hypercapnia

The effects of Adrenaline on heart are all except__________________? A. Increases heart rateB. Decreases myocardial irritability C. Increases force of contraction D. Increases oxygen uptake by heart

First heart sound occurs during the period of________________? A. Isotonic relaxation B. Isovolumetric relaxationC. Isovolumetric contraction D. Isotonic contraction

Cardiac output in L/min divided by heart rate equals_______________? A. Cardiac efficiency B. Cardiac indexC. Mean stroke volume D. Mean arterial pressure

Under resting condition the cardiac output is _______ L/ min ? A. 2.5 B. 4.25C. 5.25 D. 9.5

Conduction velocity is least in_______________? A. AV node B. SA node C. SA node D. Purkinje fibers

Absolute refractory period in heart______________? A. Lasts till cardiac contraction B. Longer than refractory period in skeletal muscle C. A phase of cardiac cycle in which heart cannot be stimulated by any amount of stimulus D. Corresponds with duration of…

Increased functional demand on the heart produces increased size of the myocardium by _______________? A. HyperplasiaB. Hypertrophy C. Fatty infiltration D. Increased amounts of fibrous connective tissue

Peripheral resistance is maximum in_______________? A. Aorta B. ArteryC. Arteriole D. Vein

Starling’s law of the heard________________? A. Does not operate in the failing heart B. Does not operate during exerciseC. Explains the increase in cardiac output that occurs when venous return is increased D. Explains the increase in cardiac output when…