A) nerve fibres distributed in ventricles
B) nerve fibres found throughout the heart
C) muscle fibres distributed throughout the heart walls
D) muscle fibres found only in the ventricle wall
Correct Answer: D
Solution :
'Bundle of His' is a network of specialized conducting muscle fibres (Purklnje fibres), which transmit the impulse from AV-node to all parts of both the ventricles.
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