Nervous System
Endocrine System
Digestive System
Respiratory System
Vocabulary Challenge
100

This organ is the "control center" of your body and processes signals.

What is the brain?

100

This system uses hormones to control body functions.

What is the endocrine system?

100

This is the process of breaking down food.

What is digestion?

100

You breathe in this gas.

What is oxygen?

100

Another word for an electrical message that gets sent through the body.

What is a signal?

200

This long structure carries messages from the brain to the body.

What is the spinal cord?

200

These structures release hormones.

What are glands?

200

Breaking food into smaller pieces by chewing is called this.

What is mechanical digestion?

200

You breathe out this gas.

What is carbon dioxide?

200

The movement of air into the lungs.

What is inhalation?

300

These cells are bundles of neurons that carry messages to and from the brain.

What are nerves?

300

Chemical messengers in the body are called this.

What are hormones?

300

This type of digestion uses enzymes. 

What is chemical digestion?

300

These tiny air sacs allow gas exchange to happen.

What are alveoli?

300

The movement of air out of the lungs.

What is exhalation?

400

These cells send electrical signals through your body.

What are neurons?

400

This "master gland" controls other glands in the body.

What is the pituitary gland?

400

This nutrient gives the body energy.

What are carbohydrates?

400

This tube carries air to the lungs.

What is the trachea?

400

Exchange of oxygen and carbon dioxide is called this.

What is gas exchange?

500

When your body reacts to a signal, it is called this.

What is a response?

500

Explain how hormones affect the body.

Hormones travel through the bloodstream and control body processes like growth and mood.

500

Where does most digestion and absorption happen?

What is the small intestine?

500

This muscle helps you breathe in and out (hint, not the lungs).

What is the diaphragm? 

500

Name one organ system and explain its entire function (to the degree of which you were taught).

Answers will be different. 

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