Some people are born with a 'hole in the heart'. This happens because there is a gap in the septum, as shown. If this gap in the septum is left unrepaired, the person gets out of breath more quickly. What could explain this?
- ADeoxygenated blood in the left atrium mixes with oxygenated blood from the right atrium.
- BDeoxygenated blood in the right atrium mixes with oxygenated blood from the left atrium.
- COxygenated blood in the left ventricle mixes with deoxygenated blood from the right ventricle.
- DOxygenated blood in the right ventricle mixes with deoxygenated blood from the left ventricle.