Printable worksheet ยท 4 of 4
Blood passes through two connected circuits - Paper 4
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
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Circulation segment: blood returning from an active leg towards the heart. Simplified adult route: right heart -> lungs -> left heart -> body -> right heart. Artery means away from the heart; vein means towards it. Oxygen content depends on the circuit. 'Deoxygenated' means relatively less oxygen, not necessarily none.
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