TUBULAR REABSORPTION

Active or Passive Transport

Loc: Glucose

PCT

Loc: Amino acids

PCT

Loc: salt

PCT

A/P: Glucose

Active Transport

A/P: Amino acids

Active Transport

A/P: Salts

Active Transport

Loc: Chloride

Ascending loop of Henle

A/P: Chloride

Active Transport

Loc: Sodium

PCT and DCT (Active)

Ascending loop of Henle (Passive)

A/P: Sodium

Both

A/P: Water

Passive Transport

Loc: Water

PCT

Descending loop of Henle

Collecting Ducts

Loc: Urea

PCT

Ascending loop of Henle

A/P: Urea

Passive

What happens to the substance when its concentration exceeds the maximal reabsorptive capacity (Tm)?

substance begins appearing in the urine

plasma concentration at which active transport stops

Renal Threshold

Appearance of glucose in urine of a person with a normal glucose level is indicative of

Tubular damage