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Home Q & A Board Biology-Related Homework Help General Biology
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irina irina
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11 years ago
Why would a rat in the dessert have a longer loop of henle?
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#1
11 years ago
A longer loop of Henle will function to produce a greater concentration of urea and salt in the medulla. The higher concentration gradient enables the removal of more water as fluid moves through the collecting duct.

Desert-dwelling mammals have very long loops and are capable of producing extremely concentrated urine resulting in very little water loss.
zzz
wrote...
#2
11 years ago
The loop of henle is found in the kidneys and is used to allow water and other essential compounds to be taken back into the blood through osmosis/diffusion in the capillaries surrounding the loop of henle. The longer it is the more water it can take back into the blood stream and so less is lost in urine. This is essential for desert survival as animals in such conditions cannot afford to lose much water where it is hard to come across
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