Biology 9700 · AS & A Level · The heart

The heart — practice question

What occurs when the blood pressure in the left ventricle becomes greater than the blood pressure in the left atrium?

  • AThe left atrioventricular valve closes.
  • BThe left atrioventricular valve opens.
  • CThe semilunar valve in the aorta closes.
  • DThe semilunar valve in the aorta opens.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI