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2 January, 22:49

Which of the following explains why arteries have thicker walls than veins?

a. because arteries carry oxygenated blood

b. because veins carry deoxygenated blood

c. because arteries carry high pressure blood from the heart

d. because veins also carry blood from the lungs into the heart

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  1. 2 January, 22:59
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    c. because arteries carry high pressure blood from the heart

    Explanation:

    Arteries carry the oxygenated blood that is pumped directly from the left ventricle of the heart. Since they receive blood from the heart, the blood pressure is higher in arteries than veins. To withstand the higher pressure of blood pumped by heart, arteries have thicker walls than the walls of veins.
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