A slower rate of blood flow in capillaries allows more time for the efficient exchange of substances between the blood and the tissues.
A slower rate of blood flow in capillaries allows more time for the efficient exchange of substances between the blood and the tissues.
| Front | Efficient exchange of substances in the capillaries is linked to the rate of blood flow. Explain how. ( 1 mark) |
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| Back | (More) time for exchange of substances; |
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