The structure that connects the peripheral nervous system to the brain is the medulla.

Peripheral Nervous System

Part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord, responsible for connecting the central nervous system to limbs and organs.

Medulla

A portion of the brainstem that controls vital functions such as heartbeat and breathing.

Brain

The complex organ located in the skull, responsible for coordinating sensory information, and directing motor responses; center of the nervous system.