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Digestive System and its organs Organs and their functions. Mechanical Digestion • Chewing, wetting, churning of food (any physical change) takes place in mouth and stomach Chemical Digestion • Chemical breakdown of food into different parts, takes place in all organs except large intestine Epiglottis • Closes off when you swallow Peristalsis • Peristalsis— muscle contractions that moves food through your digestive system Bolus • Food is swallowed in your mouth and travels through the esophagus into your stomach Chyme • Food leaves your stomach and enters the small intestine Feces • Feces—waste leaves your small intestine, large intestine (colon) and body Green-major digestive organs MOUTH STOMACH LARGE INTESTINE (COLON) SMALL INTESTINE SALIVARY GLANDS Accessory organs (give dig. Sys. Important chemicals) LIVER GALLBLADDER PYLORIC SPHINCTER PANCREAS Other structures EPIGLOTTIS TRACHEA ESOPHAGUS APPENDIX ANUS RECTUM Green-major digestive organs Blue—names for food as it leaves the organ MOUTH “bolus” STOMACH “chyme” LARGE INTESTINE (COLON) “feces” SMALL INTESTINE “feces” The End