A) Nerve fibres found throughout the heart.
B) Muscle fibres distributed throughout the heart walls.
C) Muscle fibres found only in the ventricle wall.
D) Nerve fibres distributed in ventricles.
Correct Answer: C
Solution :
The atrioventricular bundle (AV bundle), on entering the ventricles splits into right and left branches. These branches then enter the heart muscles. They branch extensively and are called Purkinje fibres. They con- duct the cardiac impulse to the ventricular wall. Hence, the correct option is (c).
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