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WorksheetsHuman Respiratory System Concepts
Total questions: 15
Worksheet time: 8mins
What important gas do our bodies need to breathe?
Carbon dioxide
Nitrogen
Oxygen
Hydrogen
What part of your body helps to filter the air you breathe by catching dust?
Lungs
Windpipe
Nostrils
Heart
What helps to catch dust particles when air first enters your nose?
Mucus
Tiny hairs
Lungs
Windpipe
What is the other name for the windpipe?
Bronchi
Alveoli
Trachea
Diaphragm
What are the two tubes that branch out from the trachea and go into the lungs?
Alveoli
Bronchi
Cilia
Nostrils
What are the tiny hairs in the bronchi that move mucus called?
Nostrils
Trachea
Alveoli
Cilia
What sticky substance in the bronchi collects germs and harmful particles?
Water
Mucus
Blood
Air
How many parts (lobes) does the right lung have?
One
Two
Three
Four
How many parts (lobes) does the left lung have?
One
Two
Three
Four
Why is the left lung a little smaller than the right lung?
To make space for the stomach
To make space for the heart
To help you run faster
To help you digest food
What are the small, spongy air sacs in the lungs called where oxygen and carbon dioxide are exchanged?
Bronchi
Trachea
Alveoli
Cilia
What is the dome-shaped muscle found below the lungs?
Heart
Stomach
Diaphragm
Ribs
What happens to the diaphragm when you breathe in?
It expands
It relaxes
It contracts
It stays still
Which organ in the human body is the only one that can float on water?
Heart
Brain
Lungs
Liver
About how many times does a person breathe in one day?
1,000
5,000
10,000
20,000
