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The answer to the Loop of Henle


Guest rainnoodle

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Guest rainnoodle

Hello,

 

I picked the freshwater along the same lines of reasoning as stated in the previous of the posts...but there still seems to be some discrepency...

 

So, I looked on the web and stumbled on to this site from Georgia State University www.gsu.edu/~bioslp/Bio3840/H2O.htm

 

It states on the 2nd paragraph right beneath "2. Aquatic vertebrates " and says that "No loop of Henle exists in freshwater vertebrate"...

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Guest Kirsteen

Hey there,

 

The answer may lie in what parameters the AAMC folks set out in the question, i.e., the environment that the fish started out in to begin with. I, too, did a wee bit of investigation regarding this mysterious lack of Henle and found a couple of sources that mentioned that both salt- and freshwater fishes having nephrons sans Henle. I can't remember how the MCAT question was worded precisely but it sounds like, no matter what environment you're in, if you're a fish, you don't want a LoH.

 

Kirsteen

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