Label respiratory system worksheet - Free Printable

Let’s go step by step to label the parts of the respiratory system correctly.

We have 9 labels to place:
- rib
- lung
- diaphragm
- alveolus
- bronchus
- nasal cavity
- larynx
- trachea
- bronchiole

Now, let’s look at where each part is located in the body diagram:

1. Top left box (pointing to nose area) → This is where air enters. That’s the nasal cavity.
2. Next box to the right (pointing to throat area below nose) → This is the voice box area — that’s the larynx.
3. Next box (pointing to windpipe going down neck) → That’s the trachea.
4. Far right top box (pointing to tiny sacs inside lungs) → These are the tiny air sacs where gas exchange happens — alveolus.
5. Left middle box (pointing to large tube branching into lungs) → After trachea splits, these are the bronchi (singular: bronchus). So this is bronchus.
6. Bottom row, far left (pointing to bones around chest) → Those are the ribs.
7. Second from left bottom (pointing to big pink organ on left side) → That’s the lung.
8. Third from left bottom (pointing to muscle under lungs) → That flat muscle that helps you breathe — diaphragm.
9. Far right bottom (pointing to small tubes inside lung) → Smaller branches inside the lung — those are bronchioles.

Let’s double-check:

- Nasal cavity → nose ✔️
- Larynx → throat/voice box ✔️
- Trachea → windpipe ✔️
- Alveolus → tiny sacs in lungs ✔️
- Bronchus → main branch into lung ✔️
- Rib → bone around chest ✔️
- Lung → big organ ✔️
- Diaphragm → muscle below lungs ✔️
- Bronchiole → smaller tubes inside lung ✔️

All match!

Final Answer:
Top row (left to right):
nasal cavity, larynx, trachea, alveolus

Middle left:
bronchus

Bottom row (left to right):
rib, lung, diaphragm, bronchiole