2. Digestive System Functions The Digestive System has 3 very important jobs: Ingest (bring in food) Digest (break down food) Egest (get rid of unusable food)

3. Digestive System Mouth Esophagus Stomach Small Intestine Large Intestine Rectum

4. Digestion Digestion is the process of both physically and chemically breaking down food into usable resources for the body. Involves both: Physical changes  Chemical changes 

5. First Stop: Mouth The mouth is the place where food enters the body. The mouth breaks food down both physically and chemically. Physical Breakdown  chewing Chemical Breakdown  enzymes Specifically carbohydrates!

6. Esophagus and Stomach The esophagus leads to the stomach. The stomach also physically and chemically breaks down food. Physical  the stomach churns, grinding food into smaller pieces Chemical  Enzymes and acids present to break down proteins

7. Stomach The proteins are broken down into smaller pieces called amino acids.

8. Small Intestine The small intestine is a very long, thin tube that leads away from the stomach. The small intestine is 7m long! Three organs dump more enzymes into the small intestine for further chemical digestion Chemical breakdown of fats, more proteins, and more sugars occurs in the small intestine. Food is also mechanically broken down and pushed through the small intestine.

9. Small Intestine The pancreas, liver, and gallbladder add enzymes into the small intestine to allow for further chemical digestion of food The small intestine is the last place of digestion in the system! The small intestine is where he absorption of the breakdown down food occurs

10. Last Stop - Large Intestine/Rectum The large intestine has the job of absorbing water from the remaining waste. The large intestine leads to the rectum, and outside of the body.

11. Review