Digestive System

1: (d) Gastric region, 2: (b) Small intestine, 3: (c) Large intestine, 4: (d) 4, 5: (a) Epithelium of visceral organs, 6: (c) 6, 7: (a) Cheek, 8: (b) Upper jaw, 9: (c) Lower jaw, 10: (d) Below tongue