1. Construct your Interactive Notes
• Staple 7 pages of binder paper to cover
• On cover:
– Chapter 16: Digestive System
– Name, Period
– Color drawing
• Number the pages

2. Notes: Overview of Digestive System
(pg 2)

3. Notes: Overview of Digestive System
(pg 2)
• Includes digestive tract and accessory organs

4. Notes: Overview of Digestive System
(pg 2)
• Includes digestive tract and accessory organs
• Functions: break down food, absorb nutrients,
eliminate waste

5. Digestive Tract
• Also called the alimentary canal or
gastrointestinal (GI) tract

6. Digestive Tract
• Also called the alimentary canal or
gastrointestinal (GI) tract
• Long continuous tube (9 meters) that extends
from mouth to anus

7. Digestive Tract
• Also called the alimentary canal or
gastrointestinal (GI) tract
• Long continuous tube (9 meters) that extends
from mouth to anus
• Includes mouth, pharynx, esophagus,
stomach, small intestine and large intestine

8. Accessory structures
• Tongue and teeth
• Function: mastication (chewing)

9. Accessory Organs
• Salivary glands, liver, gallbladder, and pancreas

10. Accessory Organs
• Salivary glands, liver, gallbladder, and pancreas
• Function: secrete fluids into digestive tract

11. Digestive System Activities
1. Ingestion: Taking in food

12. Digestive System Activities
1. Ingestion: Taking in food
2. Mechanical digestion: large pieces of food
are broken into smaller pieces through
chewing and stomach churning

13. Digestive System Activities
1. Ingestion: Taking in food
2. Mechanical digestion: large pieces of food
are broken into smaller pieces through
chewing and stomach churning
3. Chemical digestion: Complex molecules of
carbohydrates, proteins, and fats are
transformed into smaller molecules that can
be absorbed. Hydrolysis uses water to
chemically break molecules apart. Digestive
enzymes speed up the process of hydrolysis

14. Digestive System Activities
4. Movements: First movement is swallowing
(deglutition). Then mixing movements in the
stomach. Peristalsis = rhythmic contractions
that move food particles through the digestive
tract.

15. Digestive System Activities
4. Movements: First movement is swallowing
(deglutition). Then mixing movements in the
stomach. Peristalsis = rhythmic contractions
that move food particles through the digestive
tract.
5. Absorption: Simple molecules pass through
cells lining the small intestine and enter the
blood or lymph capillaries

16. Digestive System Activities
4. Movements: First movement is swallowing
(deglutition). Then mixing movements in the
stomach. Peristalsis = rhythmic contractions that
move food particles through the digestive tract.
5. Absorption: Simple molecules pass through cells
lining the small intestine and enter the blood or
lymph capillaries
6. Elimination: Food molecules that cannot be
digested are eliminated through defecation

17. Output (pg 3)
• Paste in diagram “Organs of the Digestive
System”
• We will label it as a class