You are probably referring to "involuntary body functions" - and the answer would be the autonomic nervous system. This system could be further divided into the sympathetic nervous system and the parasympathetic nervous system.
the medulla oblongata which is situated at the hind part of the brain controlls all the involuntary process such as heart beat,breathing etc
hence it is also known as the vital knot
The autonomic nervous system is responsible for involuntary actions.
Autonomic nervous system .
autonomic
Autonomic
The nervous system is responsible for directing and coordinating activities of the other systems in the body. It receives and processes information from the sensory organs, sends signals to muscles and glands, and controls voluntary and involuntary actions.
The autonomic nervous system controls the involuntary processes of the body (heart rate, blood pressure, involuntary breathing, parastalsis and intestinal movement, etc.). It does not control voluntary central nervous system functions, such as movement (motor control), sensation, and executive functions (thinking of something and then doing it).
The autonomic nervous system is part of the Peripheral Nervous System, or PNS. The autonomic nervous system is responsible for involuntary movements, the smooth and cardiac muscles. Sympathetic (fight or flight) and Parasympathetic (rest and digest) are branches of the ANS.
Subdivision of the peripheral nervous system that regulates involuntary functions.
autonomic nervous system.
The Autonomic Nervous System.
autonomic nervous system
automatic nervous system
The central nervous system processes and analyses information.
Peripheral
Central
Autonomic