Which of the following solutes are primarily reabsorbed by primary active transport?

The process of urine formation involves all of the following, except 

(a) Filtration of plasma

(b) Reabsorption of water

(c) Reabsorption of certain solutes

(d) Secretion of wastes

(e) Secretion of excess lipoprotein and glucose molecules

Sodium reabsorption in the DCT and in the cortical portion of the collecting system is accelerated by the secretion of 

(a) ADH

(b) Renin

(c) Aldosterone

(d) Erythropoietin

The distal convoluted tubule is an important site for 

(a) Active secretion of ions

(b) Active secretion of acids and other materials

(c) Selective reabsorption of sodium ions from the tubular fluid

(d) All of these

Which of the following is NOT a purpose of tubular reabsorption?

In the proximal tubule, _________ ions are pumped out of the tubule via ____________ transport. This creates an ____________ gradient, causing water to be reabsorbed through _______________.

In the proximal tubule, _________ ions are pumped out of the tubule via ____________ transport. This creates an ____________ gradient, causing water to be reabsorbed through _______________.

Predict what would happen if the tubule wall of the descending limb suddenly lost all its aquaporins.

Dr. Miller is a pediatric nutritionist working with a patient who has a low dietary calcium intake. Concerned about the possibility of hypocalcemia, she orders bloodwork. What hormone would you expect to be elevated in this patient’s bloodwork?