Investigating the stretch and recoil of arteries and veins

Essay specific features

 

Issue:

Science

 

Written by:

Karen B

 

Date added:

September 20, 2016

 

Level:

University

 

Grade:

A

 

No of pages / words:

5 / 1226

 

Was viewed:

2134 times

 

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Essay content:

Repeat steps 2 and 3 using 20, 30, 40 and 50 g masses. Record the length with and without the masses each time. When comparing the arteries and veins, the results show that the percentage change gradually increases as the amount of weights increases. The vein with mass started off with a small percentage increase of 4%, and then rose to 9%, which was maintained...
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The artery with mass varied from 10-29%. The artery walls contain collagen and elastic tissues which allow it to stretch and recoil, where as the veins do not have as much connective tissue containing collagen fibres. This is not a problem as the arteries, being closer to the heart, have to withstand a much higher pressure than the veins do...
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