The diagram shows cross sections of an artery and of a vein - Junior Cycle Science - Question 6 - 2008
Question 6
The diagram shows cross sections of an artery and of a vein. Why do arteries have much thicker walls than veins?
Why?
Give one other structural difference between... show full transcript
Worked Solution & Example Answer:The diagram shows cross sections of an artery and of a vein - Junior Cycle Science - Question 6 - 2008
Step 1
Why do arteries have much thicker walls than veins?
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Answer
Arteries have much thicker walls than veins because they carry blood that is pumped at higher pressure. This pressure is essential for effectively distributing oxygenated blood throughout the body, and the thick muscular walls of arteries help to withstand the increased pressure while maintaining the shape of the vessel.
Step 2
Give one other structural difference between arteries and veins.
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Answer
One structural difference is that arteries do not have valves, whereas veins contain valves that help prevent the backflow of blood due to lower pressure in the venous system.
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