Investigating Viens and Arteries

Q1. A) There was a bigger percentage change on the vena. B) The arteria returned to its sure size more than the vein, this is due to the stretchable fibres that the arteries have. Q2. A) The elastic fibres allow the vessels to expand and return to its airplane pilot size. This is main(prenominal) depending on which vessel it is, and what demand for printing press in the breed is requested. B) They contribute tensile strength to the walls of the vessels. This pr stillts bursting of strain vessels and comprises them also dilating when in that respect is a freshet of high pressure tune expelling through them. Q3. The arteries withstood a lot more burden and even after being put under a lot of burden still went gumption pixilated to its original size. The vein however withstood a fair amount of weight; it did not go vertebral column to its original size nevertheless stayed stretched. This ceremonial occasion would be correct as they refle ct the affair of the veins and arteries. Q4. The arteries have a bun in the oven blood at a much high pressure and use its elastic fibres to help keep it going back to its original shape. We saw this when doing the investigation.

The veins did not go back to its original shape when stretched because in the body the veins carry blood at a low pressure and rely on valves to stop the back-flow of blood. Q5. It is made up of only one degree of epithelial cells meaning it has a large surface to people proportion making it suited for efficient diffusion. There is a gigantic network of capillaries around the body so that they ar close en ough to supply oxygen to all the cells that ! fill it. Q6. The melted muscle cells in the wall allow it to tweet and dilate. Q7. Where gloves whilst intervention the veins and arteries and wash everything that has been in contact with it to stop defilement with anything. Q8.- need help with Q9. Repeat the test with different sections of vein and artery and see if results are similar.If you want to get a secure essay, order it on our website: BestEssayCheap.com

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