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Distal convoluted tuble is important for...

Distal convoluted tuble is important for homeostatic regulation of acidity of blood.

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(1) During the last phase of urine formation, i.e. during tubular secretion, some nitrogenous waste substance which have eventually entered the blood circulation through peritubular capillaries are secreted back into the DCT.
(2) The substances routinely secreted back are creatinine, potassium and hydrogen ions.
(3) The secretion of hydrogen ions occurs chiefly in DCT and collecting tubule.
(4) This regulates the acidity of the blood through homeostasis. Therefore, distal convoluted tubule is said to be important for homeostatic of the acidity of blood.
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