Functions of the Nephron and Hormones in Urine Formation

This set of flashcards contains key vocabulary related to the functions of the nephron and hormones involved in urine formation.

Descending limb of the loop of Henle

Reabsorption of an additional 15% of water by osmosis; impermeable to solutes.

Collecting ducts

Hormones determine if urine is concentrated.

Glomerular corpuscle

Filters blood and forms filtrate.

Proximal convoluted tubule

Reabsorption of majority of water and solutes from filtrate by active and passive processes; also secretion occurs here.

Distal convoluted tubule

Reabsorption of more sodium, chloride, and about 10 to 15% more water.

Ascending limb of the loop of Henle

Reabsorption of sodium and chloride decreases the osmolarity of filtrate; nearly impermeable to water.

Aldosterone

Hormone that increases sodium and chloride ion reabsorption and potassium secretion.

Secretion

Process of moving substances from renal tubule into the peritubular capillary.

Filtration

Process of moving substances from the peritubular capillary into renal tubule.

Micturition

The act of voiding (emptying) the urinary bladder.

ADH

Hormone that increases water reabsorption in the late distal convoluted tubule and collecting duct.