1. Breaks down food into nutrients.
Digestive System
Breaks down food into nutrients.

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

3. Types of Digestion Mechanical Digestion Chemical 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 Mechanical digestion takes place when the stomach churns.
Bag-like organ where digestion occurs.
Mechanical digestion takes place when the stomach churns.
Chemical digestion takes place when acids breakdown food into nutrients.
After 2-4 hours your food becomes a soupy mixture called chyme.

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

10. Bile Bile helps to digest fats in the small intestine.
Bile is made in the liver and stored in the gall bladder.
liver
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
anus
liver, pancreas
small intestine
gall bladder
duodenum
large intestine