Username6000
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(c) The aorta has many elastic fibres in its wall. An arteriole has many muscle fibres in its wall.
(i) Explain the importance of elastic fibres in the wall of the aorta.
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JeromeRome
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Due to the high pressure of the blood that's being put out by the heart, the aorta needs to be very elastic so it won't burst.
The elastic fibers provide exactly that, elasticity,meaning it will go back into it's original form, and resistance.
You can imagine a balloon. Imagine you blow air in and out, the balloon will go back to it's original form everytime you take a break. And it also won't burst.
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FailingBadly
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I'm just doing this from the top of my head but its basically elastic because the blood in the aorta is being pumped from the heart at very high pressures and the elastic fibres can contract to maintain this pressure. They can also stretch so that the aorta doesn't rupture because of this high pressure ( i dont know how many marks the question is so im not sure how much detail you need but this is basically the gist)
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Username6000
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Thank you!
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