Download Lesson #4 The Digestive and Excretory System

Lesson #4
The Digestive and Excretory System
Standard 2: Students will use nutrition and fitness information, skills, and strategies to
enhance health.
Objective: Students will be able to understand how the digestive system operates.
Journal # 8 - Using the food guide pyramid - write a menu for breakfast, lunch, and dinner.
Note it must be healthy. You may use combinations.
Activity - Have students get out a sheet of paper and fold it into a book. Give each student a
gummy bear. Then show the posters of a Journey through the digestive system. Have them
draw the Teddy Bear on the front cover.
Next: show the movie “The Magical School Bus - A Journey Through The Digestion
System”. Stop the movie at the appropriate places. And talk about what is happening to the
Gummy Bear. Then start the movie again.
On the board Digestive System Digestion - body breaks food down into smaller components that can be absorbed through the
bloodstream.
Digestion System - organs that work together to breakdown foods into substances that your cells
can use.
Trace the transparency #52 on the board of the Digestive System.
Words to know Saliva - a digestive juice produced by the salivary glands.
Stomach - a muscular organ where some digestion occurs. Stomach acid dissolves food into
liquid.
Liver - secretes a liquid call bile that helps to digest fats.
Gallbladder - stores bile until it is needed.
Pancreas - aids the small intestines in producing pancreatic juice. Enzymes that breakdown
protein, carbs, and fats.
Simple - Small Intestines Liquefied food goes to the small intestines, then the villi absorbs the nutrients from the food and
transfers the nutrients to the blood stream. Blood stream travels to all parts of the body.
Excretory System - removes waste from your body, and controls water balance.
3 kinds of waste: Exhale waste is carbon dioxide gas.
Skin waste is sweat.
Kidneys - filter waste and water, Bladder - pouch where liquid waste is
stored, colon - storage tube for solid waste, also the large intestines.
Review Power Point: Digestive System