Question
Which of the following is the correct pathway for propagation of cardiac impulse?
SA node AV node Bundle of His Purkinje fibres
AV node Bundle of His SA node Purkinje fibres
SA node Purkinje fibres AV node Bundle of His
Purkinje fibres AV node SA node Bundle of His
Solution
A.
SA node AV node Bundle of His Purkinje fibres
The heart is formed of cardiac muscles which have the property of excitability and conductivity. When the cardiac muscles are stimulated by a specific stimulus these got excited and initiate the waves (depolarization) of electric potential called cardiac impulse. Cardiac impulse is propagated through SA node AV node Bundle of His Purkinje fibres.
