THE DIGESTIVE SYSTEM Brooke Vaughn
THE DIGESTIVE SYSTEM Series of connected organs Breaks down food, absorbs nutrients, eliminates waste
FUNCTIONS OF THE DIGESTIVE SYSTEM Ingestion Digestion Absorption Defecation
ORGANS OF THE DIGESTIVE SYSTEM Alimentary canal or gastrointestinal (GI) tract Accessory organs
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
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
COMMON DIGESTIVE PROBLEMS Abdominal pain Blood in stool Diarrhea Bloating Constipation Nausea Vomiting
DISEASES Gastroenterology—gastroenterologist Colon cancer is one of the most common Digestive diseases are often related to our diets
BARRETT’S ESOPHAGUS AND GASTROESOPHAGEAL REFLUX DISEASE