1. Digestive System Parts and Function

2. Digestion involves:
Breaking down of food into smaller pieces
The mixing of food
Movement through the digestive tract
Chemical breakdown of the large molecules of food into smaller molecules.

3. Identify the organs of the digestive system

4. Mouth
Mechanical digestion - Teeth bite off and chew food into a soft pulp that is easy to swallow.
Chemical digestion – saliva

5. Esophagus
The esophagus is a muscular tube. It takes food from the throat and pushes it down through the neck, and into the stomach.
It moves food by waves of muscle contraction called peristalsis.

6. Stomach
The stomach has thick muscles in its wall. These contract to mash the food into a water soup called chyme.
The stomach lining produces strong digestive juices.

7. Small Intestine
The nutrients are broken down small enough to pass through the lining of the small intestine, and into the blood.
Nutrients are carried away to the liver and other body parts to be processed, stored and distributed.

8. Large Intestine Water is absorbed.
The remains are formed into brown, semi-solid feces, ready to be removed from the body

9. Rectum
Rectum’s job to receive stool from the colon, to let the person know that there is stool to be evacuated, and to hold the stool until evacuation happens.

10. Anus
Anus- It lets you know whether the contents are liquid, gas, or solid. The anus is surrounded by sphincter muscles that control of movement of stool.

11. Liver
It stores some nutrients, and releases them into the blood according to the activities and needs of the body (helps the body maintain homeostasis)

12. Gall Bladder
Bile (enzyme) flows from the gall bladder along the bile duct into the intestine to aid in chemical digestion.

13. Pancreas
Makes digestive juices called enzymes which help to digest food.