Other questions in this quiz

2. what are arteries made from?

  • thin walls with valves
  • thick walls of muscle and elastic fibres
  • narrow thin walls

3. what is and artificial pacemaker?

  • electrical device used to correct irregularities in the heart rate
  • a group of cells in right atrium which act as a pacemaker
  • take the blood to the organs from the organs

4. which 2 chambers pump blood out into arteries?

  • arteries
  • left and right ventricles
  • atria

5. what do veins do?

  • take blood from organs to heart
  • take blood from heart to lungs
  • allow substances to pass out of blood

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