'Bundle of His' is a part of which one of the | vedclass

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(B) The correct answer is $B$. 'Bundle of His' is a specialized part of the cardiac conduction system in the human heart. It consists of a bundle of n

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Heart

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(B) The correct answer is $B$. 'Bundle of His' is a specialized part of the cardiac conduction system in the human heart. It consists of a bundle of nodal fibres,also known as the atrioventricular bundle ($AV$ bundle). This bundle continues from the atrioventricular node $(AVN)$ and passes through the atrioventricular septa. It emerges on the top of the interventricular septum and immediately divides into a right and left bundle. These branches give rise to minute fibres throughout the ventricular musculature of the respective sides,which are called Purkinje fibres. Together,these structures form the 'Bundle of His',which is essential for the rhythmic contraction of the heart.

Column $I$	Column $II$
$i$. Eustachian valve	$a$. Opening of pulmonary aorta
$ii$. Thebesian valve	$b$. Left atrioventricular aperture
$iii$. Mitral valve	$c$. Opening of inferior vena cava
$iv$. Semilunar valve	$d$. Opening of coronary sinus

'Bundle of His' is a part of which one of the following organs in humans?

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