Websites
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Website put together by the US Health and Human Services branch of the government. Answers many questions about kidneys and their function.
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When in doubt, learn from How Stuff Works. They will never fail you. Not even when you are searching for how the kidney works.
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The perfect website to test your knowledge about kidney structure and function!
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Science Daily is a great place to find interesting, current research on a bunch of topics. We found this report that talks about our good ol' friend salivary amylase and all its importance.
Current Research
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Research review on how marine mammals regulate salt and water balance. When it's in the Journal of Experimental Biology, you know it's bound to be a good read.
Videos
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What do we love more than Bill Nye? Bill Nye talking about digestion, of course.
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Here's a cartoon video that describes digestion if it were run by microscopic bearded, British men.
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The Khan Academy is a non-profit organization whose mission is to give everyone a good education. They have a lot of great videos, and here's one on diffusion and osmosis.