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The fibres that spread the impulse to ventricular muscle cells are the:

APuffball fibres
BPurkinje fibres
CPurlin fibres
DPumice fibres
Answer & Solution
Correct answer: B. Purkinje fibres
1. They run from the bundle branches. 2. They reach the working muscle quickly. 3. Those are the Purkinje fibres. _Source: OpenStax Anatomy and Physiology 2e, Chapter 19, The Cardiovascular System: The Heart._
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