stomach with vagus nerve, stomachache, 3d

vagus nerve stomach digestion stomachache regulation gastrointestinal function innervation gastric acid secretion fullness satiety parasympathetic control gutbrain communication enteric nervous system stimulation relaxation motility peristalsis reflexes appetite hunger homeostasis autonomic sensation inflammation vagotomy neural pathways signaling neurotransmitter acetylcholine braingut axis therapy treatment disorders research physiology anatomy biofeedback clinical 3d