Cells use passive and active transport to move materials across cell membranes in order to maintain a constant internal environment. what is the process of maintaining a constant internal environment called?

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d