Label the parts of the respiratory system worksheet.

Let’s go step by step to label each part of the respiratory system based on the diagram and the word bank provided.

We are given these terms:
- Trachea
- Alveoli
- Nasal cavity
- Larynx
- Bronchiole
- Diaphragm
- Pharynx
- Lung
- Left Bronchi
- Right bronchi
- Mouth cavity

Now, let’s match them to numbers 1 through 11 in the diagram:

Number 1: Points to the inside of the nose → that’s the Nasal cavity

Number 2: Points to the mouth area → that’s the Mouth cavity

Number 3: Points to the throat area behind the mouth and nasal cavity → that’s the Pharynx

Number 4: Points to the whole left lung (from viewer’s perspective) → but wait — actually, looking at standard diagrams, number 4 is pointing to the *right* lung (since it’s on the right side of the body). But in the diagram, since we’re looking at the front of the person, the lung on the left side of the image is the person’s right lung. However, labeling usually refers to anatomical position. Let’s check carefully.

Actually, in most such diagrams:

- The lung on the left side of the image = person’s right lung
- The lung on the right side of the image = person’s left lung

But for labeling purposes, we just need to assign “Lung” to the large organ. Since both lungs are labeled separately as 4 and 9? Wait — no, look again.

Looking at the lines:

- Line 4 points to the entire right lung (anatomically right, which is on the left side of the image)
- Line 9 points to the entire left lung (anatomically left, on the right side of the image)

But the word bank has only one “Lung” — so probably “Lung” is meant for one of them, and maybe the other is not labeled? That doesn’t make sense.

Wait — perhaps “Lung” is a general term, and we have to use it once. But there are two lungs. Hmm.

Alternatively, maybe line 4 is pointing to the right lung, and line 9 to the left lung — but the word bank includes “Left Bronchi” and “Right bronchi”, so likely:

Let’s reassign with care:

Standard path of air:

Nose/mouth → pharynx → larynx → trachea → bronchi → bronchioles → alveoli

Also, diaphragm is below the lungs.

So:

1 → Nasal cavity
2 → Mouth cavity
3 → Pharynx (throat)
7 → Larynx (voice box, just below pharynx)
8 → Trachea (windpipe, tube going down)
Then trachea splits into two bronchi:

In the diagram, after trachea (8), it branches. One branch goes to the right lung (left side of image), one to left lung (right side of image).

Typically:

- The first branch to the right lung is called the Right bronchus
- The first branch to the left lung is called the Left bronchus

In the diagram:

Line 5 points to the branch going to the right lung (left side of image) → that should be Right bronchi

Line 9 points to the branch going to the left lung (right side of image) → that should be Left Bronchi

Wait — but line 9 is pointing to the whole left lung? Or to the bronchus entering it?

Looking closely: line 9 seems to point to the main bronchus entering the left lung.

Similarly, line 5 points to the main bronchus entering the right lung.

Then:

Line 4 → points to the entire right lung → so Lung (but we have two lungs — perhaps “Lung” is used for one, and the other is implied? Or maybe we use “Lung” for both? But the word bank lists “Lung” once.)

This is confusing. Perhaps “Lung” is meant for the organ, and we can use it for either, but since there are two, maybe the diagram expects us to label one as “Lung” and the other isn't labeled? No — all numbers must be filled.

Wait — let's list all 11 labels needed:

From the diagram, numbers 1 to 11.

Word bank has 11 terms:

Trachea, Alveoli, Nasal cavity, Larynx, Bronchiole, Diaphragm, Pharynx, Lung, Left Bronchi, Right bronchi, Mouth cavity → yes, 11 terms.

So each number gets one unique term.

Let’s map logically:

Air enters via:

1. Nasal cavity (nose) → 1

2. Mouth cavity (mouth) → 2

Then both lead to:

3. Pharynx (common passage) → 3

Then to:

7. Larynx (voice box) → 7

Then to:

8. Trachea (windpipe) → 8

Trachea bifurcates into:

5. Right bronchus (to right lung) → 5

9. Left bronchus (to left lung) → 9

Then within lungs, bronchi branch into smaller tubes:

10. Bronchiole (smaller airways inside lung) → 10

At the end of bronchioles are tiny sacs:

11. Alveoli (air sacs where gas exchange happens) → 11

The large organs:

4. Right lung → but we don’t have “Right lung” in word bank — we have “Lung”. So probably 4 is Lung (meaning the right lung, or just “lung” as a general term)

But then what about the left lung? Line 9 is already assigned to Left Bronchi.

Perhaps line 4 is the right lung, and we call it “Lung”, and the left lung is not separately labeled because line 9 is the bronchus, not the lung tissue.

That makes sense.

Then:

6. Points to the muscle under the lungs → that’s the Diaphragm

And we have used:

1. Nasal cavity
2. Mouth cavity
3. Pharynx
4. Lung (right lung)
5. Right bronchi
6. Diaphragm
7. Larynx
8. Trachea
9. Left Bronchi
10. Bronchiole
11. Alveoli

Check if all terms are used:

Used: Nasal cavity, Mouth cavity, Pharynx, Lung, Right bronchi, Diaphragm, Larynx, Trachea, Left Bronchi, Bronchiole, Alveoli → yes, all 11.

Perfect.

So final mapping:

1 → Nasal cavity
2 → Mouth cavity
3 → Pharynx
4 → Lung
5 → Right bronchi
6 → Diaphragm
7 → Larynx
8 → Trachea
9 → Left Bronchi
10 → Bronchiole
11 → Alveoli

Note: In some contexts, "bronchi" is plural, and "bronchus" singular, but here the word bank says "Right bronchi" and "Left Bronchi", so we use as given.

Also, "Lung" is used for the right lung (line 4), and the left lung is not explicitly labeled as an organ — its bronchus is labeled instead, which is fine.

Final Answer:

1: Nasal cavity
2: Mouth cavity
3: Pharynx
4: Lung
5: Right bronchi
6: Diaphragm
7: Larynx
8: Trachea
9: Left Bronchi
10: Bronchiole
11: Alveoli