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