Activity—How Long is the Digestive System
Activity—How Long is the Digestive System?
Objective:
Students will recognize what the length of the digestive system is and how the alimentary canal is divided into parts.
Materials:
Green yarn cut 25 cm Esophagus
Orange yarn cut 20 cm Stomach
Blue yarn cut 700 cm (7 m) Small Intestine
Red yarn cut 150 cm Large Intestine
Total—895 cm
Directions: Label the Activity at the top ALIMENTARY CANAL
You will be using a different color of yarn to represent each section of the alimentary canal. Cut pieces of yarn according to the above measurements. After cutting the yarn, tie the pieces together. Tape to paper using any type of design. Label each section of yarn with the appropriate name of the section of the alimentary canal that is represented. INCLUDE THE THREE SECTIONS OF THE SMALL INTESTINE IN ORDER AND THE SECTIONS OF THE LARGE INTESTINE FROM CECUM TO ANUS.
After completing your model, review each section with your table partner and discuss what happens in each section.
Answer these questions:
1. What action takes place in the esophagus to move food down?
2. What does the bolus change to when it goes into the stomach and what is the name of the action that takes place there?
3. What are the three sections of the small intestine?
4. What is the large intestine sometimes called?
5. What are sections of the large intestine I order?
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