Biology 9700 · AS & A Level · The heart

The heart — practice question

Heart surgery may reduce the transmission of impulses through the Purkyne tissue to the right side of the heart. What effect could this reduction have?

  • AImpulses would be delayed by the atrioventricular node.
  • BThe muscle of the right ventricle would contract slightly more slowly than the muscle of the left ventricle.
  • CThe muscle of the right atrium would not contract as fully as the muscle of the left atrium.
  • DThe sinoatrial node would transmit fewer impulses.

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