The diagram shows the human heart and some of the blood vessels of the circulatory system - Junior Cycle Science - Question 10 - 2022
Question 10
The diagram shows the human heart and some of the blood vessels of the circulatory system. The arrows indicate the direction in which the blood flows as it travels a... show full transcript
Worked Solution & Example Answer:The diagram shows the human heart and some of the blood vessels of the circulatory system - Junior Cycle Science - Question 10 - 2022
Step 1
The blood in vessel C is deoxygenated.
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Answer
False: Vessel C carries oxygenated blood from the lungs to the heart. Therefore, the blood is not deoxygenated.
Step 2
The organs found at location A are part of the respiratory system.
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True: The organs at location A, which include the lungs, are indeed part of the respiratory system where gas exchange occurs.
Step 3
Carbon dioxide leaves the blood at location B.
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True: Location B corresponds to the area where blood releases carbon dioxide, typically occurring in the capillaries surrounding tissues.
Step 4
Vessel D is a vein.
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False: Vessel D is an artery that carries oxygenated blood away from the heart.
Step 5
Explain why vessel C has thicker walls than vessel D.
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Vessel C has thicker walls than vessel D because it carries blood under higher pressure from the heart to the rest of the body. Arteries, like vessel C, need thicker walls to withstand the higher pressures compared to veins, like vessel D, which carry blood back to the heart at lower pressure.
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