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Digestive System

Digestive System. Breaks down food into nutrients. Made up of:. Mouth Esophagus Stomach Small intestine Large intestine Rectum Anus. Food does not travel through:. Salivary glands Liver Pancreas Gall bladder. Types of Digestion. Mechanical Digestion

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Digestive System

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  1. Digestive System Breaks down food into nutrients.

  2. Made up of: • Mouth • Esophagus • Stomach • Small intestine • Large intestine • Rectum • Anus Food does not travel through: • Salivary glands • Liver • Pancreas • Gall bladder

  3. Types of Digestion • Mechanical Digestion • Grinding and mashing of food into smaller pieces. • Chemical Digestion • Breaking down of food into nutrients using acids and enzymes

  4. Proteins- Broken down into amino acids Used to build muscle Carbohydrates- Broken down into simple sugars Used for energy Fats- Broken down into fatty acids Used for stored energy

  5. Digestive Tract • Food travels through the following organs: • 1.Mouth • 2.Esophagus • 3.Stomach • 4.Small intestine • 5.Large Intestine • 6.Rectum • 7.Anus

  6. 1. Mouth • Digestion begins here. Both mechanical and chemical digestion take place. • Teeth will chew and mash food into smaller pieces. (mechanical digestion) • Salivary glands found around your mouth produce saliva that begin chemical digestion of carbohydrates.

  7. 2. Esophagus • The esophagus is a long tube that connects the mouth to the stomach. • Food moves through the esophagus by peristalsis. • Peristalsis is a rhythmic muscle contraction that squeeze food down.

  8. 3. Stomach Bag-like organ where digestion occurs. • Mechanical digestion takes place when the stomach churns. • Chemical digestion takes place when acid and pepsin breakdown food into nutrients. • After 2-4 hours your food becomes a soupy mixture called chyme.

  9. 4. Small Intestine Long but narrow tube where final digestion takes place. • Chemical digestion takes place in the small intestine. Enzymes completely digest proteins and fats. • Nutrients are absorbed into the bloodstream through villi. • Villi are finger-like projections found in the small intestine. Villi

  10. liver gall bladder Bile • Bile helps to digest fats in the small intestine. • Bile is made in the liver and stored in the gall bladder.

  11. Pancreas • The pancreas releases chemicals (pancreatic juices) into the small intestine to help digestion. • Stomach acid is neutralized with bicarbonate before it enters the small intestine.

  12. 5. Large Intestine • Undigested food ends up in the large intestine. • Excess water is removed from undigested food to create solid waste. 6. Rectum -Solid waste or feces is stored here. 7. Anus -Solid waste leaves the body through here.

  13. mouth teeth salivary glands esophagus liver stomach gall bladder pancreas large intestine small intestine anus

  14. mouth esophagus stomach liver, pancreas gall bladder duodenum large intestine small intestine anus

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