Unit 3 Lesson 5 How Do Our Bodies Digest Food,
Remove Wastes, and Send Messages?
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
What Goes In...
• Food travels through your body until all the useful
parts are absorbed.
• Food travels down the esophagus, a long tube that
begins in the throat.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
What Goes In...
The stomach is a muscular bag that mashes food
into a liquid and mixes it with digestive juices. The
food then passes to the small intestine.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
What Goes In...
• The small intestine is a long coiled tube that
digests food and absorbs nutrients.
Small Intestine
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
What Goes In...
In the large intestine, water and minerals are
soaked up, leaving only waste. Solid waste passes
out of your body.
Large Intestine
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
What Goes In...
• The liver makes bile that helps break large blobs
of fat into tiny droplets so the fats can be broken
down more easily.
• The gallbladder stores bile from the liver and
sends it to the small intestine only when food
passes through.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
What Goes In...
The pancreas makes juices that are released into
the small intestine to break down fats and proteins
to be absorbed by the body.
Pancreas
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
What Goes In...
• Identify the esophagus, stomach, small intestine,
and large intestine in the image below.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 3 Lesson 5 How Do Our Bodies Digest Food, Remove Wastes, and Send Messages?
Food for Thought
• Nutrition information on a package label can help
you make healthy food choices.
• The number of servings, calories, proteins,
carbohydrates, fats, and nutrients and their daily
recommended amounts are listed on the label.
• Calories are a way to measure how much energy
your body will get from food.
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