Human Respiratory System Concepts

What important gas do we breathe in from the air?

• Carbon dioxide

• Nitrogen

• Oxygen

• Hydrogen

What part of your body helps you take in air first?

• Mouth

• Ears

• Nose

• Eyes

What helps stop dust particles from going into your nose when you breathe?

• Tiny hairs

• Mucus

• Water

• Skin

What is another name for the windpipe?

• Esophagus

• Trachea

• Bronchi

• Larynx

After the nose, where does the air travel through?

• Food pipe

• Windpipe

• Ear canal

• Blood vessels

What are the two tubes that branch out from the trachea and go into the lungs called?

• Alveoli

• Diaphragm

• Bronchi

• Cilia

What sticky substance in the bronchi helps collect germs and particles?

• Saliva

• Water

• Mucus

• Blood

How many lobes does the right lung have?

• One

• Two

• Three

• Four

What are the small air sacs in the lungs where oxygen and carbon dioxide are exchanged?

• Bronchi

• Trachea

• Alveoli

• Cilia

What is the dome-shaped muscle below the lungs that helps with breathing?

• Heart

• Diaphragm

• Stomach

• Liver