The document is a power point presentation about digestion in man. It discusses the different parts of the digestive system including the mouth, esophagus, stomach, liver, small intestine, large intestine and anus. It describes the functions of each part such as how food moves through the esophagus via peristalsis, how the stomach is J-shaped and food reaches it within 8 seconds, and how the liver secretes bile and the small intestine completes digestion and absorbs nutrients from food.