Biology 9700 · AS & A Level · The heart

The heart — practice question

Which events take place during contraction of the left ventricle?

  • AThe bicuspid valve opens and semilunar valve in the aorta opens.
  • BThe bicuspid valve closes and semilunar valve in the aorta closes.
  • CThe pressure in the left atrium becomes greater than the pressure in the left ventricle.
  • DThe pressure in the left ventricle becomes greater than the pressure in the aorta.

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