Sections View Full Chapter Figures Tables Videos 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|Favorite 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|Favorite 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 GET ACCESS TO THIS RESOURCE Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth Get Free Access Through Your Institution Contact your institution's library to ask if they subscribe to McGraw-Hill Medical Products. Access My Subscription GET ACCESS TO THIS RESOURCE Subscription Options Pay Per View Timed Access to all of AccessMedicine 24 Hour $34.95 (USD) Buy Now 48 Hour $54.95 (USD) Buy Now Best Value AccessMedicine Full Site: One-Year Individual Subscription $995 USD Buy Now View All Subscription Options