Digestive System LESSON

Digestive System

by Andrea Lewis

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The mouths is the

of the digestive tract.

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The esophagus connects the mouth to the

.

Multiple Choice

The human digestive system allows a person to receive nutrients from the food and water that he or she consumes. What is a necessary step in the process of digestion?

• Adding particles of water to allow food to dissolve

• Breaking down particles of food and water with chemicals

• Breaking down particles of water with basic substances

• Adding particles of waste to particles of food and water

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The small intestine is responsible for absorbing

into the blood stream.

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The large intestine removes

from the stool.

Multiple Choice

A main function of the digestive system is to —

• generate white blood cells to destroy any harmful bacteria in food.

• utilize the lungs for the exchange of carbon dioxide and oxygen.

• generate hormones that are used to stimulate the release of waste.

• utilize the small intestine to absorb nutrients from digested food.

Fill in the Blanks

The anus is the last part of the

system.

Multiple Choice

The digestive system helps the body to maintain homeostasis by supplying the organs with —

• Waste products and fat

• Toxins and Enzymes

• Water and Energy

• Oxygen and Water