What is another word for "maintenance of body fluid balance?"

Question

Quizplus · Accepted Answer

Hydration: maintenance of body fluid balance.
Remember to hydrate when exercising - you should drink plenty of water.
Equilibrium: balance
The patient was experiencing dizziness as the medication had affected her equilibrium. 
Etiology: the cause or origin of a disease or illness.
The etiology of his high blood pressure included smoking and a lack of exercise.
Aegis: control.
Policies of the hospital are under the aegis of the chief physician.

What Is Another Word for "Maintenance of Body Fluid Balance