1. The digestive system

2. Learning goals We are learning the organs of the digestive system.
We are learning the functions of the digestive system.

3. What is it?
essentially a tube that extends from the mouth to the anus

4. Basic functions Ingestion- Food is taken into the body
Digestion- Food is being broken down
Absorption- Nutrients from food are absorbed (#1 function!!!)
Elimination- Solid wastes are excreted

5. Absorption
process by which food that has already been broken down passes through the walls of the intestine into the bloodstream.
takes place mainly in the small intestine.

6. parts mouth (physical and chemical dig)
esophagus (movement of food via peristalsis)
stomach (physical digestion via churning and chemical digestion via enzymes and acid)
pancreas (secretes insulin and enzymes into intestines)
gall bladder (stores bile)
liver (secretes bile which breaks up fats)
intestines (absorbs nutrients and water)
rectum/anus (stores waste to be excreted)

7. The Digestive System Esophagus Liver Stomach Pancreas Gall Bladder
Large Intestine
(colon)
Small Intestine
Rectum
Anus

8. Learning goals We are learning the organs of the digestive system.
We are learning the functions of the digestive system.