3 processes used by vertebrates to achieve the final composition of urine

Question 1

Filtration

Answer 1

transfer of soluble components (water, waste) from blood to glomerulus

Question 2

Reabsorption

Answer 2

absorption of molecules, ions, water necessary for homeostasis from glomerular filtrate to blood

Question 3

Secretion

Answer 3

transfer of hydrogen ions, creatinine, drugs, and urea from blood to collecting duct (primarily made of water)