SA node gets excited and generates cardiac impulse when a) both the atria are contracted b) both the atria are completely filled with blood c)blood is pumped into ventricles d) blood is pumped into aorta
Answer (1)
18th May, 2020
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The answer is b)both the atria are completely filled with blood
Whenever the atria are completely filled with blood then both the atria are contracted,it leads to stimulation of SA node which leads to the generation of cardiac impulse from atria to ventricle through AV node,bundle of his,purkinje fibers,ventricular muscles(myocardium).
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