Ventricular contraction is in command of :
1. S.A. Node
2. A.V. Node
3. Purkinje fibers
4. Papillary muscles
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBundle of His is a network of:
1. Muscle fibres distributed throughout the heart walls
2. Muscle fibres are found only in the ventricle wall
3. Nerve fibres distributed in ventricles
4. Nerve fibres found throughout the heart
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology