1. Function, Length, and Time
Digestive System
Function, Length, and Time

2. Mouth Function: Length: Time:
Both mechanical and chemical digestion begins in the mouth.
Mechanical = Teeth
Chemical = saliva (enzymes)
Length:
3inches/10 cm
Time:
On average 30 seconds to chew food thoroughly

3. Esophagus Function: Length: Time:
Function:
Muscular tube that connects the mouth to the stomach.
Food travels down your Esophagus through the process known as Peristalsis.
Length:
10 inches
Time:
10 seconds

4. Stomach Function: Length: Time
Function:
A J-shaped, muscular pouch located in the abdomen where mechanical and some chemical digestion occurs.
Length:
Around 6 inches plus/16cm plus
Time
3 hours for complete mechanical digestion
Food Turns and Churns through mechanical digestion
Acids and Enzymes attack the churned food through chemical digestion

5. Small Intestine Function: Length Time
Where almost all chemical digestion and absorption of nutrients takes place.
Length
20-25ft. (for this class, just put 15ft.)
2-3 cm in diameter
Time
Upwards of 6 hours.
Works together with the Liver and the Pancreas, creating bile and enzymes to break down foods into nutrients.

6. Large Intestine Function: Length Time
Holding tank of the digestive system. Final absorption of water into the bloodstream. Remaining material is readied for elimination as feces/poop.
Length
4-5 feet/1.5 meters
(put 5 ft. for our class)
Time
Upwards of 2 days/30-40 hours

7. The Digestive System Total Length Total Time 29 feet 8 inches/9 meters
Up to 49 hours

8. Identify A B C D E F

9. Note Card/String Notes
Materials
6 Index Cards
Digestive system Notes
String/yarn
Markers
Directions
On next slide

10. Directions
Write the NAME, LENGTH, TIME of each part of the digestive system on an individual note card.
Draw a colored illustration of the organ/part of the digestive system
Length of string between each note card to be:
Mouth to Esophagus = 3 inches
Esophagus to Stomach = 5 inches
Stomach to Small Intestine = 10 inches
Sm. Intestine to Lg. Intestine = 15 feet
Lg. Intestine to Colon (EXIT) = 5 feet
Attach the string to your card at the appropriate distance between each part.
Use tape to attach your string to the card.