The portion of the nephron that empties into the collecting duct is the?

The kidney functions in
a. preventing blood loss
b. white blood cell production
c. synthesis of vitamin E
d. excretion of nitrogenous wastes (such as urea)
e. production of the hormone aldosterone

The portion of the nephron that empties into the collecting duct is the
a. glomerulus.
b. ascending loop of Henle.
c. distal convoluted tubule.
d. proximal convoluted tubule.
e. descending loop of Henle.