Figure 4 shows a diagram of the human blood system - Edexcel - GCSE Biology Combined Science - Question 2 - 2023 - Paper 2
Question 2
Figure 4 shows a diagram of the human blood system.
(a) (i) Name blood vessel X.
(ii) Which row of the table shows the width of the wall and blood pressure in bloo... show full transcript
Worked Solution & Example Answer:Figure 4 shows a diagram of the human blood system - Edexcel - GCSE Biology Combined Science - Question 2 - 2023 - Paper 2
Step 1
Name blood vessel X.
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Answer
Blood vessel X is the pulmonary artery. This vessel carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation.
Step 2
Which row of the table shows the width of the wall and blood pressure in blood vessel X?
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Answer
The correct row is D: 'thin' for the width of the wall and 'low' for the blood pressure. This is because the pulmonary artery has thinner walls compared to arteries like the aorta, and it operates under lower pressure as it directs blood to the lungs.
