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#Question id: 11677


Which of the following contribute to maintaining the high osmolarity of the renal medulla?

I) active transport of salt from the upper region of the ascending limb

II) the spatial arrangement of juxtamedullary nephrons

III) diffusion of urea from the collecting duct

IV) diffusion of salt from the descending limb of the loop of Henle

#SCPH28 | Zoology
  1. All of these conditions contribute to the osmolarity of the medulla.
  2. I, II, and III
  3. I and IV
  4. I, II, and IV