Indicate Whether the Portion of the Tubule in Question Is

Short Answer

Indicate whether the portion of the tubule in question is permeable or impermeable to the substance in question.(Options may be used more than once or not at all.)
a.permeable
b.impermeable
The ascending limb of Henle's loop is ______________ to H₂O
The descending limb of Henle's loop is ______________ to H₂O
The vasa recta is ______________ to salt and ______________ to H₂O
The distal and collecting tubules in the absence of vasopressin are ______________ to H₂O
The distal and collecting tubules in the presence of vasopressin are ______________ to H₂O