alleryStart learning →Binding of antidiuretic hormone to collecting tubule cells produces which change in those cells?
ASodium pumps move out of the membrane
BChloride channels close along the membrane
CAquaporins move into the cell membrane
DAquaporins are broken down inside the cell
Answer & Solution
Correct answer: C. Aquaporins move into the cell membrane
1. Aquaporins are water channel proteins that let water cross a membrane quickly.
2. Antidiuretic hormone makes the epithelial cells of the collecting tubules move stored aquaporins to the apical surface.
3. Inserted into the membrane, they raise the water permeability of those cells sharply.
4. Water then passes out of the urine and back into the bloodstream.
5. When the hormone level falls the aquaporins are removed again, so they are recycled and not destroyed.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 26 "Fluid, Electrolyte, and Acid-Base Balance", section Role of ADH_
Keep practising Fluid, Electrolyte, and Acid-Base Balance
Browse all Fluid, Electrolyte, and Acid-Base Balance questions for DHA Nursing Licensing Exam, or explore more Anatomy & Physiology topics.
Related questions
Tap the bigger quantityBuild the thirst responseAcidosis or alkalosis?Name the imbalanceSend each ion to its compartmentWhich laboratory pattern fits metabolic alkalosis once compensation is under way?Protein buffering accounts for what share of the buffering power of the blood?Excess potassium in the extracellular fluid has which effect on excitable membranes?