Chapter 10, Problem 3P

Which of the following does not contribute to the high salt concentration in the interstitial fluid of the kidney medulla? (a) active transport of sodium from the upper part of the ascending limb (b) diffusion of salt from the ascending limb of the loop of Henle (c) reabsorption of salt from various regions of Bowmans capsule (d) counterflow of fluid through the two limbs of the loop of Henle (e) diffusion of urea out of the collecting duct

Diabetes insipidus or diabetes mellitus would most likely be indicated by ________. anuria polyuria oliguria none of the above

The macula densa is/are: present in the renal medulla dense tissue present in the outer layer of the kidney cells present in the DCT and collecting tubules present in blood capillaries.