Reabsorption and Secretion

Proximal convoluted tubule

Which area of the nephron reabsorbs volume of filtrate, glucose and amino acids, and Na+ and K+?

Proximal convoluted tubule

Which area of the nephron secretes H+, NH4+, creatinine, drugs, and toxins?

Loop of henle

Which area of the nephron reabsorbs ½ of water and 2/3 of sodium and chloride ions by process of countercurrent multiplication?

Thin descending limb

Which limb of the loop of henle is permeable to water but impermeable to solutes?

Thick ascending limb

Which limb of the loop of henle is impermeable to water and has active solute transport?

ADH

What stimulation is the reabsorption of water in the DCT and collecting system under?

Aldosterone

What stimulation is the reabsorption of Na in the DCT and collecting system under?

Positive feedback loop

Which feedback loop is occurring during the countercurrent multiplication and concentration of urine?