Circulatory System
Respiratory System
Digestive System
Muscular and Skeletal System
Nervous System
100

This is the organ responsible for pumping blood throughout the body.

What is the heart?

100

These organs are like bags. When we inhale they take in oxygen, and when we exhale they expel carbon dioxide. 

What are lungs?

100

This organ absorbs all the nutrients from the chyme that your stomach produces. 

What is the small intestine?
100

This part of the skeletal system protects the brain from being damaged. When you are a baby, it is not fully fused (one solid piece). 

What is the skull?

100

This organ, part of your central nervous system, is responsible for making decisions, and sending and receiving signals to and from the rest of your body.

What is the brain?

200

These pathways for transporting blood carry oxygenated blood away from the heart.

What are arteries?

200

A tube that connects the nose and mouth to the lungs. 

What is the trachea (or windpipe)? 

200

These two organs are responsible for producing bile (to break down fats) and enzymes (to digest proteins and carbs), respectively. 

What are the liver and pancreas?

200

This skeletal structure protects the bones and heart. 

What is the ribcage?

200

This part of the brain (located at the front) controls our voluntary muscles.

What is the cerebrum?

300

These carry oxygen-depleted blood back to the heart.

What are veins?

300

This muscle sits below your lungs, and allows your lungs to expand and relax. 

What is the diaphragm? 

300

This is the organ which contains enzymes and hydrochloric acid which helps to break down food. 

What is the stomach?

300

This substance, found in bones, helps to produce our blood. It is yummy. It specifically makes white and red blood cells. 

What is bone marrow?

300

This part of the brain is responsible for controlling involuntary muscles (breathing, digesting). It connects the brain to the spinal cord. 

What is the brain stem?

400

These are tiny veins that connect arteries to veins.

What are capillaries?

400

These sacs in the lungs are responsible for the exchange of gases such as oxygen and carbon dioxide. 

What are the alveoli?

400

This is the main function of the digestive system.

What is to break down food and absorb nutrients?

400

These kinds of tissues connect our bones to our muscles.

What are tendons?
400

This part of the brain is responsible for making all your muscles work together - in other words, balancing and movement.

What is the cerebellum?

500

This is the most important function of the circulatory system.

To send nutrients in the blood to all the parts of the human body.

500

This organ is a tube that connects your throat to your trachea. It also contains your vocal chords. 

What is the larynx? 

500

If the large intestine didn't do its job (absorb water from what is being digested), what would we experience?

What is diarrhea?

500

We cannot control these types of muscles (found along the digestive tract, also the diaphragm) 

What are smooth muscles?

500

This is the part of the brain that is responsible for regulating your body temperature. It is located right in the middle of the brain.

What is the hypothalamus?