Left ventricle is thicker than right ventricle…….times.
a) three
b) four
c) five
d) six
How many pulmonary vein/s carrying oxygenated blood enter into the left atrium?
a) three
b) four
c) five
d) one
The word “sino atrial node” is given because…….
a) it produces sound of heart
b) it gives electric signal
c) it develops from sinus venosis
d) all of them
How much time (in seconds) is required for action potential to travel from SA node to AV node?
a) 0.3
b) 0.03
c) 0.4
d) 0.04
The condition in which the heart beats decreases than 40/min is called…….
a) cardiac arrhythmia
b) tachycardia
c) bradycardia
d) none of them
Which of the following has/have no valve?
a) veins
b) lymphatic vessels
c) artery
d) both a and b
