1. THE DIGESTIVE SYSTEM Brooke Vaughn

2. THE DIGESTIVE SYSTEM  Series of connected organs  Breaks down food, absorbs nutrients, eliminates waste

3. FUNCTIONS OF THE DIGESTIVE SYSTEM  Ingestion  Digestion  Absorption  Defecation

4. ORGANS OF THE DIGESTIVE SYSTEM  Alimentary canal or gastrointestinal (GI) tract  Accessory organs

5. ALIMENTARY CANAL  Mouth  Food enters the GI tract  Mixed with saliva and masticated  Pharynx  Passageway for food, fluids, and air  Esophagus  Conducts food by peristalsis to the stomach  Stomach  Temporary storage tank for food  Site of food breakdown  Coated walls of mucous  Gastric juice, intrinsic factor, pepsinogens  Produces chyme  Small intestine  Central place of digestion and absorption  Large intestine  Dries out the indigestible food residue by absorbing water  Eliminates residues from the body

6. ACCESSORY ORGANS  Teeth  Masticate  Salivary glands  Produce saliva  Bolus  Pancreas  Produces enzymes that break down all categories of digestible foods  Liver  One of the most important organs  Produces bile  Gallbladder  Concentrates bile by the removal of water

7. COMMON DIGESTIVE PROBLEMS  Abdominal pain  Blood in stool  Diarrhea  Bloating  Constipation  Nausea  Vomiting

8. DISEASES  Gastroenterology—gastroenterologist  Colon cancer is one of the most common  Digestive diseases are often related to our diets

9. BARRETT’S ESOPHAGUS AND GASTROESOPHAGEAL REFLUX DISEASE