Practice identifying the main parts of the respiratory system, explaining how breathing works, and learning healthy habits that protect the lungs.
Read each problem carefully. Use complete sentences when explaining your thinking. Show your work in the space provided.
Learning how air moves through the body and supports life
Health - Grade 4-5
- 1
Name two main jobs of the respiratory system.
- 2
Put these parts in the order air travels when you breathe in: lungs, nose or mouth, trachea, bronchi.
- 3
What is the diaphragm, and what does it do when you inhale?
- 4
Explain why oxygen is important for your body.
- 5
What waste gas leaves your body when you breathe out?
- 6
The tiny air sacs in the lungs are called alveoli. What important job happens in the alveoli?
- 7
Choose the healthier habit and explain why: playing outside away from smoke or sitting near cigarette smoke.
- 8
During exercise, your breathing usually becomes faster. Explain why this happens.
- 9
Label the following parts as upper airway or lower airway: nose, trachea, lungs, mouth.
- 10
What is the trachea, and why is it sometimes called the windpipe?
- 11
Look at a model of lungs with two branches leading into them. What are the two large tubes that branch from the trachea into the lungs called?
- 12
Explain one way the nose helps protect the respiratory system.
- 13
A student says, 'The lungs pump blood around the body.' Is this correct? Explain your answer.
- 14
Write one healthy habit that can help keep your lungs strong and explain how it helps.
- 15
Describe what happens to your chest and lungs when you exhale.