Which statement about the enteric nervous system is true?

Which statement about the enteric nervous system is true?

• A. It relies entirely on signals from the brain to function.
• B. It can operate independently of the brain and spinal cord.
• C. It controls breathing.
• D. It is located outside the GI tract.

Answer: (B)

The enteric nervous system acts as its own local command center within the gut, capable of coordinating movement and secretions largely on its own. Its networks of neurons in the gut wall can generate and regulate peristalsis, rhythmic contractions, and digestive secretions without needing input from the brain or spinal cord. It does still talk to the brain and can be modulated by it, but its baseline functioning doesn’t depend on the central nervous system, which is why it can operate independently. It sits entirely inside the GI tract walls, not outside, and breathing is controlled by the brainstem and respiratory muscles, not by the enteric system. So, the true statement is that it can function independently of the brain and spinal cord.

The enteric nervous system acts as its own local command center within the gut, capable of coordinating movement and secretions largely on its own. Its networks of neurons in the gut wall can generate and regulate peristalsis, rhythmic contractions, and digestive secretions without needing input from the brain or spinal cord. It does still talk to the brain and can be modulated by it, but its baseline functioning doesn’t depend on the central nervous system, which is why it can operate independently. It sits entirely inside the GI tract walls, not outside, and breathing is controlled by the brainstem and respiratory muscles, not by the enteric system. So, the true statement is that it can function independently of the brain and spinal cord.