Lungs
Heart
Circulatory System
Respiratory System
Fun Facts
100

What are the lungs used for?

Breathing

100

Is the heart a muscle or organ?

Muscle

100

What does the circulatory system carry?

Blood

100

What does the respiratory system do?

Allows you to breathe

100

Are the circulatory and respiratory systems different?

Yes

200

How many lungs are there in a human body?

2

200

What two body parts does the heart sit between?

Lungs

200

What color is blood?

Maroon
200

Where does the respiratory system start?

Nose and mouth

200

How many times can the circulatory circle earth?

Twice!

300

Which lung is bigger, right or left?

Right

300

The heart is the center of what system?

Circulatory

300

What carries blood across the body and back to the heart?

Veins

300

Where does the respiratory system end?

Alveoli

300

What protects the lungs and the heart?

Ribcage

400

What important body part sits between both lungs?

Heart

400

How many parts does the heart have?

4

400

What color cells carry oxygen across the body?

Red

400

What is at the center of your body that is part of the respiratory system?

Lungs

400

How many alveoli sacs are there in a body?

Around 600 million

500

What are the tiny air sacs that are produce oxygen into your blood?

Alveoli

500

What is the main point of the heart?

To pump blood.

500

If all of the circulatory system was laid down, how far would it stretch?

60,000 miles

500

What carries oxygen down to your alveoli?

Bronchioles

500

What is another name for the throat?

The trachea

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