The first step to breaking down our food is in the ...

The water in our mouth that begins to break down our food is called....

Once food is in your mouth, you begin to __________ it, which breaks it into smaller pieces and mixes it with your saliva.

Your throat (after swallowing) and your intestines (after the stomach) are long and hollow. What is another name for this kind of body part?

Inside the stomach there are different acids that break down your food. These are also called...

In which part of the digestive system does most of the energy get taken into the body?

The final step of the digestive system will take you to...

How many layers of skin do we have?

When you are hot, your skin helps you to cool down by making ...

When you are cold, your muscles in your skin make...

To protect you from the sun's rays, your skin has...

Lungs have _________________, like trees.

Air that enters the nose and throat is ...

Which kind of muscle helps you to run, dance, and move?

Skeletal muscle is usually connected to your bones, but may also connect to your..

Which kind of muscle helps your heart to pump blood in your body?

Which kind of muscle helps you go to the bathroom...not walk to the bathroom..."GO" when you are in the bathroom?

Which of the following DOESN'T get moved by the beating of your heart?

The heart has the same number of chambers and valves. How many of each does your heart have?