What structures in a mammal are involved in each of the following excretory system processes: filtration, absorption, secretion, urine storage, and voiding?

Filtration - Kidney (filter waste from blood to form urine), Large intestines (filter waste and water from digested food), Lungs (carbon dioxide)

Secretion - Kidney (hormones), Skin (sweat), Liver (bile)

Absorption - Kidney, Large intestines

Urine storage - Urinary bladder

Note: These organs are mostly based on human excretory system.