1. Osmosis, Diffusion & The Digestive System
Biology
Osmosis, Diffusion & The Digestive System

2. Diffusion Process by which important chemicals enter our cells.
A natural process by which, chemicals move from an area of high concentration (density) to low.

3. Osmosis Process by which water flows inside a cell.
Water will flow to the area of high solute (dissolved material) concentration to try and equalize the concentration.

4. Osmosis Concentrations
Equal amount of water inside /
outside of cell.
Too little water inside cell
Too much water inside cell

5. Bill Nye Digestion
Copy out the questions below and leave 2-3 lines per answer:
Why is the inside of the digestive system not really “inside” your body?
What is the function of food to the human body?
What chemical reaction gets energy from the food you eat? What other element is combined with the food to release the energy?
Name the first three organs through which food passes.

6. When your stomach “growls”, what is it trying to tell you?
How is the food in a stomach broken down into simpler substances? What chemicals help this process?
Why does the acid in your stomach not eat through the stomach lining?
About how much food and water does the average person eat and drink per day?
How does the mouth start the process of digestion?
How long does it take food to travel through the digestion system?

7. Can you swallow food when hanging upside down
Can you swallow food when hanging upside down? What is the name of the process that pushes food down the esophagus?
What is the name given to the mix of broken down food and water in the stomach and small intestine? What does the digestive system add to the consumed food and water?
What is the function of the large intestine?
In what organ in the waste from the digestion process collected for eventual disposal?

8. The Digestive System Liver Stomach Pancreas Gall Bladder
Large Intestine
(colon)
Small Intestine