Question

the involuntary action of a person is controlled by

Answer 1

the involuntary action is controlled by
medulla oblongata

Answer 2

The involuntary actions include breathing, pumping action of the heart, peristalsis and control of blood pressure. The medulla oblongata is part of the brain stem that controls most of these involuntary actions (The brain stem is the posterior part of the brain that is continuous with the spinal cord).  Hope this helps you.  If it mark as brillanest answer