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Which of the following is the correct pathway for propagation of cardiac impulse?

a)

SA node  AV node  Bundle of His  Purkinje fibres

b)

AV node  Bundle of His  SA node  Purkinje fibres

c)

SA node  Purkinje fibres  AV node  Bundle of His

d)

Purkinje fibres  AV node  SA node  Bundle of His



Question ID - 3489 | SaraNextGen Top Answer

Which of the following is the correct pathway for propagation of cardiac impulse?

a)

SA node  AV node  Bundle of His  Purkinje fibres

b)

AV node  Bundle of His  SA node  Purkinje fibres

c)

SA node  Purkinje fibres  AV node  Bundle of His

d)

Purkinje fibres  AV node  SA node  Bundle of His

1 Answer
127 votes
Answer Key / Explanation : (a) -

(a)

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.

127 votes


127