The document summarizes the key structures and functions of the digestive system. It describes the two main phases of digestion as mechanical and chemical breakdown. It then outlines the main organs that make up the gastrointestinal tract, including the mouth, esophagus, stomach, small intestine, large intestine, liver, gallbladder and pancreas. It provides details on the histology, roles and control mechanisms of each section of the digestive tract.

1. The Digestive System

6. Anatomy of the Mouth and Throat

7. Human Deciduous and Permanent Teeth

8. Dorsal Surface of the Tongue

9. The Major Salivary Glands

13. Peristalsis and Segmentation

16. Anatomy of the Stomach

22. Structure of the Villi in the Small Intestine

26. Anatomy of the Large Intestine

34. The Duodenum and Related Organs

35. The Organs and Positions in the Abdominal Cavity

36. Structures of the Alimentary Canal