Keeping you alive

How your body gets its nutrients and gets rid of toxins...

Lets get down to the central purpose of the digestive system!

The main purpose of the digestive system is to give you nutrients so YOU DON'T DIE! In the process of eating, however, you also put toxins (or just toxic levels of normally good things) in your body too. You will investigate two things today:

(1) how the small intestine's villi pass nutrients to the blood stream

(2) the important purpose of the liver and gall bladder

Answer all questions in your science notebook!

Start by rereading the sections of your book on the small intestine, liver, and pancreas.

1. In general what happens in each of these organs?
Digestive System, part 3: Crash Course A&P #35

Video Questions:

2. Draw a diagram of the small intestine and what is happening to digested food.

3. What other body system aids in getting nutrients to your cells?

3. How do villi pass nutrients into the blood stream?

4. What is the purpose of the liver?

5. Why does it produce bile?

6. What is the role of the gall bladder in removing toxins from your body?

When you have completed these questions, you are done!