Biology 9700 · AS & A Level · The heart

The heart — practice question

The graph illustrates how pressure varies in different regions on the left side of the heart during one cardiac cycle. Which row shows the pressure changes in each part of the heart?

  • Aleft atrium: X; left ventricle: Y; aorta: Z
  • Bleft atrium: Y; left ventricle: Z; aorta: X
  • Cleft atrium: Z; left ventricle: X; aorta: Y
  • Dleft atrium: Z; left ventricle: Y; aorta: X

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