The diagram shows the human circulatory system - Edexcel - GCSE Biology - Question 3 - 2015 - Paper 1
Question 3
The diagram shows the human circulatory system.
The blood vessels in organ X.
blood vessel W
blood vessel Y
(a) (i) Name organ X.
(ii) Explain how the heart cau... show full transcript
Worked Solution & Example Answer:The diagram shows the human circulatory system - Edexcel - GCSE Biology - Question 3 - 2015 - Paper 1
Step 1
Name organ X.
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Answer
Organ X is the right lung.
Step 2
Explain how the heart causes blood to move to organ X.
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Answer
Blood flows into the right atrium, then moves into the right ventricle when it contracts. The contraction of the ventricle increases the blood pressure, which forces the blood into the pulmonary artery, directing it towards organ X.
Step 3
Which row shows the names of blood vessels W and Y?
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Answer
The correct option is D: blood vessel W is the vena cava and blood vessel Y is the aorta.
