Outline 26 2008 Osmoregulation and excretion

- Lecture 26 OSMOREGULATION AND EXCRETION Summary Animal life evolved in the sea and moved onto land carrying its salt-water environment with it

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Lecture 26: OSMOREGULATION AND EXCRETION Summary . Animal life evolved in the sea and moved onto land carrying its salt-water environment with it in extracellular spaces, etc. Terrestrial life, however, poses problems for organisms attempting to osmoregulate. Feeding, breathing, and waste removal all tend to disrupt the water balance. The strategies for water balance and waste removal are as varied as organisms themselves, yet patterns emerge. In this lecture we begin with a comparative approach by briefly investigating examples from several groups including insects, fish and birds before exploring vertebrate osmoregulation, especially the remarkable kidney, using mammals as the principle example. Reading Assignment Campbell, Neil A. and Reece, Jane B. (2008). 8 th edition. Chapter 44. Smedley, Scott R. and Eisner, Thomas, 1995. Sodium uptake by puddling in a moth. Science, 270, 1816-1818. This is a primary research article and is written in an especially terse style required by the journal Science. Thus, it may be a bit tough
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This note was uploaded on 09/13/2009 for the course BIO 1110 taught by Professor Randywayne during the Fall '09 term at Cornell University (Engineering School).

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- Lecture 26 OSMOREGULATION AND EXCRETION Summary Animal life evolved in the sea and moved onto land carrying its salt-water environment with it

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