Which blood vessels have a valve at the junction between the blood vessel and the heart?
Aorta and pulmonary artery
B Aorta and vena cava
C Aorta, pulmonary artery and pulmonary vein
D Aorta, pulmonary artery, pulmonary vein and vena cava
Your answer - OCR Gateway - GCSE Biology - Question 14 - 2023 - Paper 3
Question 14
Which blood vessels have a valve at the junction between the blood vessel and the heart?
Aorta and pulmonary artery
B Aorta and vena cava
C Aorta, pulmonary arter... show full transcript
Worked Solution & Example Answer:Which blood vessels have a valve at the junction between the blood vessel and the heart?
Aorta and pulmonary artery
B Aorta and vena cava
C Aorta, pulmonary artery and pulmonary vein
D Aorta, pulmonary artery, pulmonary vein and vena cava
Your answer - OCR Gateway - GCSE Biology - Question 14 - 2023 - Paper 3
Step 1
Identify the vessels involved
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Answer
The important blood vessels related to the heart include the aorta, pulmonary artery, pulmonary vein, and vena cava. These vessels are connected to the heart and have crucial roles in circulation.
Step 2
Determine the presence of valves
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Answer
Valves are critical for ensuring unidirectional blood flow between the heart and the blood vessels. The aorta and pulmonary artery both have valves (the aortic valve and pulmonary valve, respectively) at their junctions with the heart.
Step 3
Analyze the options
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Answer
The options given are:
A: Aorta and pulmonary artery - This is correct, as both have valves.
B: Aorta and vena cava - This is incorrect; the vena cava does not have a valve at its junction with the heart.
C: Aorta, pulmonary artery and pulmonary vein - This is incorrect since the pulmonary vein does not have a valve at its junction with the heart.
D: Aorta, pulmonary artery, pulmonary vein and vena cava - This is incorrect for the same reasons as noted above.
Step 4
Select the correct answer
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Answer
Based on the analysis, the correct answer is A: Aorta and pulmonary artery.
