MCQ
Sequence of electrical impulse in heart beat is
  • A
    $AV$node $\rightarrow$ pacemaker $\rightarrow$ auricles $\rightarrow$ ventricles
  • B
    Ventricle $\rightarrow$ pacemaker $\rightarrow$ $AV$ node $\rightarrow$ auricle
  • Pacemaker $\rightarrow$ atria $\rightarrow$ $AV$ node $\rightarrow$ ventricle
  • D
    Pacemaker $\rightarrow$ $AV$ node $\rightarrow$ atria $\rightarrow$ ventricle

Answer

Correct option: C.
Pacemaker $\rightarrow$ atria $\rightarrow$ $AV$ node $\rightarrow$ ventricle
c
Sequence of electrical impulse in heart is

Sinoauricular node (Pacemaker of heart)

Atrioventricular node ($AV$ node)

Bundle of His

$1$

Ventricles

Purkinje fibre

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