The circulatory system interactive exercise - Free Printable

Let's solve this step by step. The image is a diagram of the circulatory system, showing both pulmonary circulation (between the heart and lungs) and systemic circulation (between the heart and the rest of the body). We need to label the parts correctly using the provided list.

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🔍 Step 1: Understand the Circulatory Pathway

The circulatory system has two main loops:

1. Pulmonary Circulation:
- Deoxygenated blood → Right atrium → Right ventricle → Pulmonary artery → Lungs → Pulmonary veins → Left atrium

2. Systemic Circulation:
- Oxygenated blood → Left ventricle → Aorta → Body tissues (blood tissues) → Cava vein → Right atrium

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🧩 Step 2: Identify Each Label Based on Position

We'll go through each blank in the diagram and assign the correct term.

#### Top:
- The top box points to the lungs.
✔ Lungs

#### Middle Section – Heart Chambers:
- On the left side of the heart (blue side = deoxygenated):
- Upper chamber: Right atrium
- Lower chamber: Right ventricle
- On the right side of the heart (red side = oxygenated):
- Upper chamber: Left atrium (not listed, but we have Left ventricle)
- Lower chamber: Left ventricle

Wait — the word "Left atrium" is not in the list. But "Left ventricle" is.

So we must use only the terms provided.

Given labels:
- Lungs
- Cava vein
- Systemic circulation
- Blood tissues
- Aorta
- Pulmonary vein
- Pulmonary circulation
- Pulmonary artery
- Right atrium
- Left ventricle
- Right ventricle

So no “Left atrium” — that’s okay. We’ll place what we have.

Now let’s map:

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📌 Labeling the Diagram

#### 1. Top box (pointing to lungs):
✔ Lungs

#### 2. Arrow pointing to the blue vessel going from heart to lungs:
This is the pulmonary artery, which carries deoxygenated blood to the lungs.
✔ Pulmonary artery

#### 3. Arrow pointing to the red vessel coming from lungs to heart:
This is the pulmonary vein, carrying oxygenated blood back to the heart.
✔ Pulmonary vein

#### 4. Arrow pointing to the large blue vessel entering the heart from the body:
This is the cava vein (superior and inferior vena cava), bringing deoxygenated blood from the body to the right atrium.
✔ Cava vein

#### 5. Arrow pointing to the large red vessel leaving the heart to the body:
This is the aorta, which carries oxygenated blood from the left ventricle to the body.
✔ Aorta

#### 6. Arrow pointing to the heart chambers:
- Right atrium (top-left chamber, receiving blood from cava vein)
- Right ventricle (bottom-left chamber, pumping to lungs)
- Left ventricle (bottom-right chamber, pumping to aorta)

So:
- Left side of heart (blue): Right atrium, Right ventricle
- Right side of heart (red): Left ventricle (no left atrium in list, so just label the bottom one as Left ventricle)

But note: there are two arrows pointing to the heart chambers.

Looking at the diagram:
- One arrow points to the upper left chamber → Right atrium
- One arrow points to the lower left chamber → Right ventricle
- One arrow points to the lower right chamber → Left ventricle

So:
- Left side, top: Right atrium
- Left side, bottom: Right ventricle
- Right side, bottom: Left ventricle

#### 7. Arrow pointing to the body (tissues):
This is where blood delivers oxygen and nutrients — blood tissues
✔ Blood tissues

#### 8. Arrow pointing to the loop between heart and lungs:
This is pulmonary circulation
✔ Pulmonary circulation

#### 9. Arrow pointing to the loop between heart and body:
This is systemic circulation
✔ Systemic circulation

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✔ Final Answer: Fill in the blanks

Here's how the diagram should be labeled:

```
[Lungs]
↑
|
[Pulmonary artery] ←→ [Pulmonary vein]
| |
[Right atrium] [Left ventricle]
| |
[Right ventricle] [Aorta]
| |
[Cava vein] ←→ [Blood tissues]
|
[Systemic circulation]
```

Wait — actually, the layout shows:

- Top: Lungs
- Left side: Pulmonary artery (from heart to lungs), then Cava vein (from body to heart)
- Right side: Pulmonary vein (from lungs to heart), then Aorta (from heart to body)
- Heart: Right atrium, Right ventricle, Left ventricle
- Bottom: Blood tissues (body)
- Loops: Pulmonary circulation (heart ↔ lungs), Systemic circulation (heart ↔ body)

So based on the arrows:

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🖼️ Correct Placement (based on visual):

1. Top box (above lungs) → Lungs

2. Arrow pointing to blue vessel from heart to lungs → Pulmonary artery

3. Arrow pointing to red vessel from lungs to heart → Pulmonary vein

4. Arrow pointing to large blue vessel from body to heart → Cava vein

5. Arrow pointing to large red vessel from heart to body → Aorta

6. Arrow pointing to upper-left chamber of heart → Right atrium

7. Arrow pointing to lower-left chamber of heart → Right ventricle

8. Arrow pointing to lower-right chamber of heart → Left ventricle

9. Arrow pointing to body (tissues) → Blood tissues

10. Arrow pointing to the loop between heart and lungs → Pulmonary circulation

11. Arrow pointing to the loop between heart and body → Systemic circulation

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✔ Final Answer (Listed):

| Box Position | Correct Label |
|--------------|----------------|
| Top (above lungs) | Lungs |
| Left, blue vessel to lungs | Pulmonary artery |
| Right, red vessel from lungs | Pulmonary vein |
| Left, blue vessel from body | Cava vein |
| Right, red vessel to body | Aorta |
| Upper-left heart chamber | Right atrium |
| Lower-left heart chamber | Right ventricle |
| Lower-right heart chamber | Left ventricle |
| Bottom (body) | Blood tissues |
| Loop between heart and lungs | Pulmonary circulation |
| Loop between heart and body | Systemic circulation |

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🧠 Summary of Key Concepts:

- Pulmonary circulation: Heart → Lungs → Heart (gas exchange)
- Systemic circulation: Heart → Body → Heart (nutrient delivery)
- Deoxygenated blood: Blue vessels → Right side of heart → Lungs
- Oxygenated blood: Red vessels → Left side of heart → Body
- Ventricles pump blood out, atria receive blood

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✔ You’ve now successfully labeled the circulatory system!