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||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 MyAccess profile is currently affiliated with '[InstitutionA]' and is in the process of switching affiliations to '[InstitutionB]'. Please click ‘Continue’ to continue the affiliation switch, otherwise click ‘Cancel’ to cancel signing in. 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 Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth