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Mutation in cystic fibrosis transmembrane conductance regulator (CTFR) protein alter which of the following ion transport mechanism?
a. Ca++-activated Cl- secretion
b. Ca++-activated Cl- uptake
c. cAMP-stimulated Na+ secretion
d. cAMP-stimulated Na+ uptake


a :roll:


yes i agree with is secretion of cl- that is imapired


isnt it Cl- uptake thats defective,bec the secretions have increased Cl- levels.


agree with A

also they say abnormal expression of chloride channel as well as misregulation of sodium channel ..

Good Q crista :idea:

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