This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Distal convoluted tubule

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The volume of fluid reaching the distal convolute tubule:

  • is only 20% of the glomerular filtrate
  • has only 10% of filtered sodium remaining

The tubular fluid entering the DCT is hypotonic because of the active pumping occurring in the ascending limb of the loop of Henle.

This residual sodium is reabsorbed under the control of aldosterone.

Increased aldosterone causes:

  • reabsorption of the sodium in the DCT
  • secretion of potassium and hydrogen ions into the DCT

The hydrogen ions are primarily buffered by secreted ammonia.

Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page