Involuntary actions are actions which are done unconsciously, without the conscious knowledge of the person performing them.
The statement that the Medulla controls your involuntary actions is true. The medulla is located in the hindbrain and is responsible for control of automatic tasks, like breathing, heart rate (the beat is increase or decrease based on information from other parts of the body), determines when blood vessels should constrict to reduce blood flow... All these tasks are involuntary , we are not aware of them.
