MEDICAL PHYSIOLOGY

Detailed explanation-1: -These vital mechanisms are controlled by one of the brain’s most durable parts–the brain stem. The brain stem is an automatic control center for many such important involuntary actions of the body.

Detailed explanation-2: -The brain stem sits beneath your cerebrum in front of your cerebellum. It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.

Detailed explanation-3: -The medulla oblongata is the rod-shaped part of the brain which is seen below the cerebrum, located near the cerebellum of the brain. It controls involuntary actions like heartbeat and breathing.

Detailed explanation-4: -It controls the function of the nervous system like digestion, urination, circulation, pumping blood. All the involuntary actions. Therefore, this is the correct option.

Detailed explanation-5: -Involuntary actions are those action that controlled by medulla oblongata which is a part of the autonomous nervous system where as voluntary actions are controlled by the cerebellum. The medulla oblongata directly controls heartbeat, blood pressure, breathing and digestion.