Digestive System.

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Presentation transcript:

Digestive System

Mouth Saliva – chemical digestion Teeth – mechanical digestion

Esophagus Long tube (10 inches) Connects mouth to stomach Moves food via peristalsis

Stomach J-shaped muscular organ Lined with mucus Churns and mixes food with digestive juices Makes chyme (consistency of milk shake) Food spends 2 –3 hours here

Small Intestine About 22 feet long Nutrients are absorbed via villi

Large Intestine About 5 feet long Left over food travels here Water is absorbed (colon) Solid waste (feces) is produced Last section of large intestine is rectum

Anus Opening Solid waste (feces) leaves the body

Other Organs – Food never enters Liver – Makes bile (to digest fats) Gallbladder – stores bile Pancreas – makes enzymes

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