Which two systems regulate and control the body's functions?

The systems controlling the whole human system are the vital systems in the body...

they are:

Airway&Breathing > Respiratory System

Circulation >CardioVascular system

Above two system form the ABC of Resucitation & for Maintainance of Life

The Integrity & functional preservation of Central Nervous System are maintained by the above two systems.

Preservation of Central Nervous System is the basis for a gud quality of life.