BI-1191
The heart
Biology · Secondary 3 · Medium · The heart
During ventricular systole, the pressure in the left ventricle becomes higher than in the aorta. What is the state of the valves on the left side of the heart at this moment?
- Atrio‑ventricular valve open, semi‑lunar valve closed
- Atrio‑ventricular valve closed, semi‑lunar valve open
- Both valves open
- Both valves closed
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