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Biology-Related Homework Help Anatomy and Physiology Topic started by: student93 on Apr 12, 2014



Title: A mutant mice has its Loop of Henle upside down and it has been noticed that water wasting in this ...
Post by: student93 on Apr 12, 2014
A mutant mice has its Loop of Henle upside down and it has been noticed that water wasting in this mutant mice has increased. Explain why this specific mutation has caused water wasting to increase in this mutant mice.


Title: A mutant mice has its Loop of Henle upside down and it has been noticed that water wasting in this ...
Post by: padre on Apr 13, 2014
I believe there is an issue with the descending portion of the loop. The thin descending limb has low permeability to ions and urea, while being highly permeable to water. The loop has a sharp bend in the renal medulla going from descending to ascending thin limb. I am not 100% sure whether water moves via a transport protein or whether it happens because the membrane is just permeable to water. One source states that passive transfer of water occurs, not sure what it means.


Title: A mutant mice has its Loop of Henle upside down and it has been noticed that water wasting in this ...
Post by: ak47_ on Apr 13, 2014
I believe it's always passive through aquaporins