Skeletal System
Circulatory System
Respiratory System
Nervous System
Interesting Facts
100

What type of thing makes up the skeletal system? 

Bones

100

This is the main organ of the circulatory system

Heart

100

What is the main organ of the respiratory system? 

Lungs

100

What is the main organ of the nervous system?

The brain

100

Healthy lungs appear as what color? 

Pink

200

You were born with ______ bones. 


By the time you're an adult, you will have only _____ bones. 

350 bones and 206 bones. 

200

What are the two important jobs of the circulatory system?

The circulatory system moves blood and regulates your body temperature. 

200

What important gas does the respiratory system provide for the body?

Oxygen

200

What is the purpose or role of the nervous system? 

The nervous system tells other areas of the body what to do. 

200

What is your largest organ?

Skin

300

What two organs are protected by your ribcage? 

Heart and Lungs

300

What are the other parts that make up the circulatory system? 

Blood vessels, veins, and blood. 

300

Is breathing automatic?

Yes, breathing is done without you being aware of it. 

300

The nervous system consists of what 3 parts? 

Brain, spinal cord, and nerves

300

True or False: Human teeth are just as strong as shark teeth. 

True! 

While shark teeth might be sharper. They are the same level of strength. 

400

What bone protects the brain? 

The skull or cranium

400

Oxygen travels through ______ part of the circulatory system? 

Blood Vessels

400

What are the tubes in the lung called? 

Bronchi

400

The nervous system warns you when you're in danger. Causing this common response ______ or _______. 

Fight or flight

400

When is the brain most active? 

At night, while sleeping. 

500

What bone protects your spinal cord? 

The backbone or spine. 

500

Your body has between ____ and ____ quarts of blood. 

4 to 5 quarts of blood

500

The respiratory system is connected to what other main system?

The circulatory system

500

The brain cannot feel pain. Why is this possible? 

There are no pain receptors in the brain

500

What organ can regenerate (regrow itself)? 

The liver

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