Biology 0610 · IGCSE · Heart

Heart — practice question

What occurs as the left ventricle contracts?

  • Aatrioventricular valves closed; semilunar valves closed
  • Batrioventricular valves closed; semilunar valves open
  • Catrioventricular valves open; semilunar valves closed
  • Datrioventricular valves open; semilunar valves open

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