The diagram shows the human circulatory system. (a) (i) Name blood vessel W. Put a cross (X) in the box next to your answer. A aorta B pulmonary artery C pulmonary vein D vena cava (ii) Deoxygenated blood enters the heart in the chamber labelled Y. Explain how blood is moved from chamber Y to the lungs.

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The diagram shows the human circulatory system - Edexcel - GCSE Biology - Question 5 - 2016 - Paper 1

Question 5

The diagram shows the human circulatory system. (a) (i) Name blood vessel W. Put a cross (X) in the box next to your answer. A aorta B pulmonary artery C pulmonary... show full transcript

Worked Solution & Example Answer:The diagram shows the human circulatory system - Edexcel - GCSE Biology - Question 5 - 2016 - Paper 1

Step 1

Name blood vessel W.

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Answer

The blood vessel labelled W is the pulmonary vein.

Step 2

Explain how blood is moved from chamber Y to the lungs.

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Answer

Blood enters the chamber labelled Y which is the right atrium.
From the right atrium, blood flows into the right ventricle.
The heart muscle then contracts, pushing blood through the pulmonary artery towards the lungs.
The blood flows through a valve that opens to allow it to enter the pulmonary artery, ensuring it moves efficiently towards the lungs for oxygenation.

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