The digestive system breaks down food physically and chemically and absorbs nutrients into the bloodstream. It consists of a long continuous digestive tract that food moves through, including the mouth, esophagus, stomach, small intestine, and large intestine. Accessory organs that produce fluids entering the digestive tract include the liver, which produces bile to help digest fat, the gallbladder which stores and concentrates bile, and the pancreas which produces digestive enzymes.

1. Digestive System (pg 8)

2. Digestive System (pg 8)
• Function: Breaks down food physically and
chemically into nutrient molecules and
absorbs those nutrients into the bloodstream

3. Digestive Tract
• A long continuous tube that food moves
through

4. Digestive Tract
• A long continuous tube that food moves
through
1. Mouth

5. Digestive Tract
• A long continuous tube that food moves
through
1. Mouth
2. Esophagus: tube that runs from mouth to
stomach

6. Digestive Tract
• A long continuous tube that food moves
through
1. Mouth
2. Esophagus: tube that runs from mouth to
stomach
3. Stomach: Churns food and mixes it with
digestive enzymes and acid

7. Digestive Tract
• A long continuous tube that food moves
through
1. Mouth
2. Esophagus: tube that runs from mouth to
stomach
3. Stomach: Churns food and mixes it with
digestive enzymes and acid
4. Small Intestine: Finishes digestion and
absorbs nutrients

8. Digestive Tract
• A long continuous tube that food moves through
1. Mouth
2. Esophagus: tube that runs from mouth to
stomach
3. Stomach: Churns food and mixes it with
digestive enzymes and acid
4. Small Intestine: Finishes digestion and absorbs
nutrients
5. Large Intestine: Absorbs water, eliminates waste

9. Accessory Organs
• Produce fluids that enter the digestive tract

10. Accessory Organs
• Produce fluids that enter the digestive tract
1. Liver: Produces bile (which helps digest fat),
stores vitamins, detoxifies poisons

11. Accessory Organs
• Produce fluids that enter the digestive tract
1. Liver: Produces bile (which helps digest fat),
stores vitamins, detoxifies poisons
2. Gallbladder: Stores and concentrates bile

12. Accessory Organs
• Produce fluids that enter the digestive tract
1. Liver: Produces bile (which helps digest fat),
stores vitamins, detoxifies poisons
2. Gallbladder: Stores and concentrates bile
3. Pancreas: Produces digestive enzymes

13. Accessory Organs
• Produce fluids that enter the digestive tract
1. Liver: Produces bile (which helps digest fat),
stores vitamins, detoxifies poisons
2. Gallbladder: Stores and concentrates bile
3. Pancreas: Produces digestive enzymes
4. Salivary glands: Produce saliva