Autonomic control system
The autonomic control system is part of the peripheral
nervous system, and has the important function of maintaining the internal
environment of the human body in a steady condition.
As various changes occur to the body both internal and
external this control system reacts by regulating such things as the blood
pressure, heart rate and salts in the blood stream and so on.
The autonomic control system, as the name implies, generally
works automatically without voluntary control, as we do not consciously direct
our rate of breathing or heart beating.