The Structure of the Digestive System
Lesson Plan Reference
Grade Level 6-12
Difficulty Level 3 (Developing to Mastery)
Type of Assignment Individual
In this activity students will produce a labeled model of the digestive system. Students will them add information to the diagram to describe what happens at each stage.
Digestive System Diagram Example
|Mouth||Food enters the alimentary canal through the mouth. It is chewed by teeth which break food down into smaller pieces. The food is mixed with saliva that contains enzymes.|
|Esophagus||The fibromuscular tube connecting the mouth to the stomach is called the esophagus. Food is pushed down using a wave like muscular motion called peristalsis.|
|Stomach||The stomach is the muscular organ where food is mixed with gastric juices. Gastric juice has a low pH, meaning it is acidic, and is used to help digest food and kill potentially harmful bacteria.|
|Liver||In the digestive system, the liver produces bile which helps with the digestion of fats and oils.|
|Gall Bladder||The gallbladder is where bile is stored and concentrated.|
|Pancreas||The pancreas is where biological catalysts called enzymes are produced. Digestive enzymes speed up the breaking down of large nutrient molecules.|
|Small Intestines||The small intestines are made up of three parts: the duodenum, the jejunum, and the ileum. Here, food is mixed with digestive enzymes and bile. The enzymes speed up the digestion process. Nutrients are then absorbed into the bloodstream.|
|Large Intestines||The large intestines are made up of two parts: the colon and the rectum. In the colon, water is reabsorbed from the food. Feces are stored in the rectum until they are ready to be passed.|
|Anus||Feces leave the alimentary canal through the anus.|
(These instructions are completely customizable. After clicking "Copy Assignment", change the description of the assignment in your Dashboard.)
You are going to produce a labeled model of the digestive system. You will identify the main parts and describe their function.
- Click "Use this Template" from the assignment.
- Search for "digestive system". Pull down the diagram into the cell.
- Label the parts of the digestive system using Textables and arrows.
- Describe the function of the different parts of the digestive system.
- Save and submit the assignment. Make sure to use the drop-down menu to save it under the assignment title.
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