Label the Respiratory System interactive worksheet - Free Printable

Let's solve this step by step.

We are asked to label the respiratory system using the provided word box:

Word Box:

- Pharynx
- Trachea
- Left Lung
- Bronchi
- Right Lung
- Nose
- Alveoli
- Diaphragm
- Larynx

Now, let’s analyze the diagram and match each part with its correct label based on human anatomy.

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Step-by-step labeling:

1. Nose
- Located at the top of the image, at the entrance of the respiratory tract.
- This is where air enters the body.

2. Pharynx
- The tube-like structure behind the nose and mouth that connects the nasal cavity to the larynx.
- It's just below the nose and above the larynx.

3. Larynx
- Also known as the voice box. It's located below the pharynx and above the trachea.
- Often depicted as a slightly wider structure with cartilage rings.

4. Trachea (Windpipe)
- The long tube extending from the larynx down into the chest.
- Has a series of C-shaped cartilage rings visible in the drawing.

5. Bronchi
- The two branches that split from the trachea and enter each lung.
- One goes to the right lung, one to the left.

6. Right Lung & Left Lung
- The large structures on the right and left sides of the chest.
- The right lung is typically larger and has three lobes; the left has two (and makes space for the heart).

7. Alveoli
- Tiny sac-like structures inside the lungs where gas exchange occurs.
- Shown as small clusters within the lung tissue.

8. Diaphragm
- The dome-shaped muscle at the bottom of the lungs.
- It separates the thoracic cavity from the abdominal cavity and helps in breathing.

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Final Labeling (from top to bottom):

1. Nose → Topmost structure (entrance)
2. Pharynx → Behind the nose/mouth
3. Larynx → Below pharynx, above trachea
4. Trachea → Long tube descending from larynx
5. Bronchi → Two tubes branching off trachea into lungs
6. Right Lung → On the right side of the chest
7. Left Lung → On the left side of the chest
8. Alveoli → Small clusters inside the lungs
9. Diaphragm → Curved muscle at the base of the lungs

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Correctly labeled diagram:

From top to bottom, the lines should be labeled as:

1. Nose
2. Pharynx
3. Larynx
4. Trachea
5. Bronchi
6. Right Lung (right side)
7. Left Lung (left side)
8. Alveoli (inside both lungs)
9. Diaphragm (bottom)

> Note: "Alveoli" may have multiple lines pointing to the tiny sacs inside the lungs. "Bronchi" refers to the two main branches after the trachea splits.

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✔ Final Answer Summary (Labeling Order):

| Line Number | Label |
|-------------|---------------|
| 1 | Nose |
| 2 | Pharynx |
| 3 | Larynx |
| 4 | Trachea |
| 5 | Bronchi |
| 6 | Right Lung |
| 7 | Left Lung |
| 8 | Alveoli |
| 9 | Diaphragm |

This completes the labeling of the respiratory system.