The nervous system makes up the muscle’s in the digestive system. the nervous system can act fast to digestive stimuli. This also is called a short reflex from the nerves. The organs that is made with the nervous system is brain, spinal cord, and sensory organs. The nerves are responsible for the control of the body and communication with the digestive system.
here's article about how the nervous system works with the digestive system and what's connected.