Digestive System
Skeletal System
Circulatory System
Nervous System
Repiratory System
100

The organ where acids break food down further. 

What is the stomach?

100

These bones protect your heart and lungs.

What are the ribs?

100

This pump works every minute of life.

What is the heart?

100

These sense the outside world and communicate with the rest of the body’s systems.

What are nerves?

100

These 2 organs are the main part of the respiratory system.

What are the lungs?

200

This organ would be about 18 feet long if you unrolled it.

What is the small intestine?

200

This bone protects your brain.

What is your skull?

200

There are many of these all through the body and they carry blood.

What are veins?

200

This organ tells the body to react to changes in the environment.

What is the brain?

200

This is often called the throat.

What is the trachea?

300

This is the first stop in the digestive system.

What is the mouth?

300

This is how your body is able to sit up straight.

What is the spine?

300

These large blood vessels carry blood away from the heart.

What are the arteries?

300

This is a bundle of nerves that connects your brain to the rest of your body.

The spinal cord.

300

Air enters the body here.

What is the nose and mouth?

400

This is a long tube that takes chewed food down to the stomach.

What is the esophagus?

400

These bones help you walk.

What are the long bones?

400

These are the tiny sacs where the exchange of oxygen and carbon dioxide takes place.

What are alveoli?