Exchange Flashcards by auri opa

Q

Why do we need specialised exchange surfaces?

A

High metabolic demand
Low SA:V Ratio
Diffusion distance too long
Increase uptake of O2 and removal of CO2 (waste products)
Diffusion is not sufficient

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Q

Why do we need blood?

A

To transport soluble substances e.g O2 around the body for uptake in muscles or removal of substances such as CO2.

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Q

A

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