Digestive System

Where did Sassafras twins travel after learning about muscular system in China?

Where does digestion process begin?

• stomach
• mouth
• esophagus

• intestine

What do you call watery liquid secreted into the mouth by glands, providing lubrication for chewing, swallowing, and aiding digestion?

Avielle was eating a sandwich, and Boaz asked her, "What do you call the tube that carries food from your mouth to your stomach?" What should she answer?

When you swallow the food, your (a)   closes, keeping food from going down the ​ (b)   and into your ​ (c)   .

• epiglottis
• trachea
• lungs
• gullet
• esophagus
• stomach

Label the parts of the digestive system.

c

b

d

e

Epiglottis

Stomach

Esophagus

Large Intestine

Small Intestine

Reorder the following options to describe the beginning of the digestion process:

• Saliva mixes with the food in your mouth helping the digestive process.

• When you chew, you break up the food with your teeth.

• The muscles in your esophagus squeeze and push the food into your stomach.

• Your throat squeezes together when you swallow pushing down the food into your esophagus.

• Your stomach stretches and digestive fluids pour into it to break down the food further.

Find the city in Texas where Sassafras traveled to learn about the Digestive System.

What is the hard, shiny, white outer layer of your teeth that covers the underlying tissues?

• Pulp

• Dentin

• Gum

• Enamel

Enamel is the hardest substance in the human body – even stronger than bone – and is made up almost entirely of minerals.

• True

• False