Purkyne tissue conducts excitation

  1. from the ventricles to the SAN
  2. to the coronary arteries
  3. to the apex of the ventricles so they contract from the bottom upwards
  4. across the atria
Answer

C) to the apex of the ventricles so they contract from the bottom upwards

Ventricles contract upwards, pushing blood out. AS & A Level Biology · Topic 8 Transport in Mammals · 8.3 The heart

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