Question

Sort the following steps of urine formation with the first process at the top.

• A. $\mathrm{Filtration}$
• B. $\mathrm{Reabsorption}$
• C. $\mathrm{Secretion}$
• D. $\mathrm{Concentration}\mathrm{of}\mathrm{urine}$

Answer 1

Filtration is the movement of water and solutes from plasma to the kidney. Reabsorption involves the absorption of ions and water that are necessary to maintain homeostasis of the body. Secretion is responsible for the transport of certain molecules out of blood into the urine. Finally, the filtrate is concentrated to maintain water balance in the body.