Cardiac Conduction System (SA, AV Nodes) · NCERT Biology

The conducting fibers with the fastest impulse transmission speed are:

  1. Purkinje fibers
  2. Bundle of His
  3. AV nodal fibers
  4. SA nodal fibers
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Correct answer: Purkinje fibers

Purkinje fibers have the highest conduction velocity. This ensures rapid and coordinated ventricular contraction.

Difficulty: Medium Question 18 of 20

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