Why is the part labelled 5 thicker than 6?
- 5 is the left ventricle and 6 the right ventricle
- 6 is the left ventricle and 5 the right ventricle
- 5 receives blood from the left auricle and 6 from the right
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5 pumps blood round the body and 6 pumps blood into the lungs
- 5 deals with oxygenated blood and 6 deals with deoxygenated blood