Which part of a reflex arc would connect a sensory neuron from the face and neck to a motor neuron in a lower section of the spinal cord?

The sensory neuron in the face and neck would transmit the signals to other neurons in the spinal cord. These signals would be transmitted via the dorsal root to spinal cord. From there, an intermediate neuron or a relay neuron would convey these signals via ventral root to motor neurons in lower section of spinal cord.