Which of the following statements concerning the medullary vertical osmotic gradient is incorrect? A) the loops of Henle of juxtamedullary nephrons establish a medullary vertical osmotic gradient by means of countercurrent multiplication. B) the vasa recta enable the medulla to be supplied with blood while conserving the medullary vertical osmotic gradient by means of countercurrent exchange. C) the countercurrent system establishes and maintains a medullary vertical osmotic gradient ranging from 300 to 1,200 mosm/liter. D) the collecting tubules of the juxtamedullary nephrons but not the cortical nephrons descend through the medullary vertical osmotic gradient before emptying into the renal pelvis. E) the medullary vertical osmotic gradient permits excretion of urine of differing concentrations by means of vasopressin-controlled, variable H₂O reabsorption from the final tubular segments.

Question

Quizplus · Accepted Answer

Both juxtamedullary and cortical nephrons' collecting ducts pass through the medullary gradient, allowing for water reabsorption and urine concentration.

Which of the Following Statements Concerning the Medullary Vertical Osmotic