A band of non-conducting tissue between the atria and ventricles

  1. closes the valves
  2. speeds up conduction
  3. acts as the pacemaker
  4. prevents the excitation wave passing directly to the ventricles
Answer

D) prevents the excitation wave passing directly to the ventricles

It forces the signal through the AVN. AS & A Level Biology · Topic 8 Transport in Mammals · 8.3 The heart

Biology MCQ · More A Level Biology: Transport in mammals MCQs · Practise