Revision of how the digestive system works.

HOW THE DIGESTIVE SYSTEM WORKS




The Process:

1. Digestion: the mouth, esophagus and stomach all help our body digest the food we eat.

2. Absorption: the small intestine absorbs the nutrients from the food. From the small intestine, the nutrients go into the blood.

3. Elimination: the large intestine and rectum transform the undigested food into solids called faeces.

The Parts:

1. Mouth: digestion starts in the mouth. The teeth crush the food and mix it with saliva.

2. Esophagus: the food travels down the esophagus to the stomach.

3. Stomach: in the stomach, the food mixes with gastric juices. 

4. Liver: the liver produces a liquid called bile that helps break down the food.

5. Small intestine: the food goes into the small intestine. Here it mixes with bile from the liver. Nutrients are absorbed here and they pass into the blood.

6. Large intestine: the undigested food passes into the large intestine. There it's transformed into faeces.

7. Rectum: finally, the faeces pass through the rectum and leave the body through the anus.