BI-2271
The heart
Biology · Secondary 4 · Medium · The heart
In a child with a hole in the septum between the ventricles, some blood flows directly from the left ventricle to the right ventricle. Which statement best explains why this happens?
- Blood pressure is higher in the left ventricle than in the right ventricle
- Blood pressure is higher in the right ventricle than in the left ventricle
- Blood in the right ventricle has a higher oxygen concentration
- Valves between the ventricles force blood to move from right to left
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