Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content +++ Appendix A ++Table Graphic Jump LocationTable A–1. Summary of major reabsorption and secretion events by major tubular segments View Table||Download (.pdf) Table A–1. Summary of major reabsorption and secretion events by major tubular segments Proximal tubule Loop of Henle Distal tubule Collecting ducts Organic nutrients R Urea R S R Proteins, peptides R Phosphate R Sulfate R Organic anions* S Organic cations* S Urate R (mostly) and S Sodium R R R R Chloride R R R R Potassium R R S (usually) and R Water R R R Hydrogen ions S S S or R Bicarbonate R R S or R Ammonium S R S Calcium R R R *Some passive transport may occur in the distal nephron depending on pH. ++Table Graphic Jump LocationTable A–2. Major functions of the various collecting-duct cells View Table||Download (.pdf) Table A–2. Major functions of the various collecting-duct cells Principal cells Reabsorb sodium Secrete potassium Reabsorb water Type A intercalated cells Secrete hydrogen ions Reabsorb or secrete potassium Type B intercalated cells Secrete bicarbonate Inner medullary cells Reabsorb urea Secrete ammonia/ammonium Your Access profile is currently affiliated with [InstitutionA] and is in the process of switching affiliations to [InstitutionB]. Please select how you would like to proceed. Keep the current affiliation with [InstitutionA] and continue with the Access profile sign in process Switch affiliation to [InstitutionB] and continue with the Access profile sign in process Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Error: Incorrect UserName or Password Username Error: Please enter User Name Password Error: Please enter Password Sign in Forgot Password? Forgot Username? Sign in via OpenAthens Sign in via Shibboleth You already have access! Please proceed to your institution's subscription. Create a free profile for additional features.