BI-2265
The heart
Biology · Secondary 4 · Medium · The heart
A child with an untreated hole in the septum between the ventricles has lower oxygen levels in the blood leaving the left ventricle. Which statement best explains this?
- Blood flows from the right ventricle to the left, increasing oxygen content.
- Blood flows between the ventricles so some deoxygenated blood enters the left ventricle, mixing and lowering oxygen content.
- Blood cannot leave the left ventricle and remains fully oxygenated.
- The septum pumps extra oxygen into the blood.
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