Circulatory system worksheet | PDF - Free Printable

Since I can't view or access uploaded images directly, I can’t see the specific diagram you're referring to. However, based on your description — a labeled heart diagram with blanks to fill in according to blood flow — I can help you solve this common anatomy task.

Let’s assume this is a standard human heart diagram showing the path of blood flow through the heart, and the labels are asking for the origin and destination of blood in each chamber and vessel.

Here’s how blood flows through the heart:

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Deoxygenated Blood Flow (Systemic → Pulmonary Circulation):

1. Body → Superior/Inferior Vena Cava → Right Atrium
2. Right Atrium → Right Ventricle (via tricuspid valve)
3. Right Ventricle → Pulmonary Artery → Lungs

Oxygenated Blood Flow (Pulmonary → Systemic Circulation):

4. Lungs → Pulmonary Veins → Left Atrium
5. Left Atrium → Left Ventricle (via mitral/bicuspid valve)
6. Left Ventricle → Aorta → Body

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Now, let's match this to typical labeling in such diagrams. Based on the image description and common layout:

Assuming the labels are as follows:

```
1. From: ________ → Right Atrium
2. To: ________ ← Right Atrium
3. From: ________ → Right Ventricle
4. To: ________ ← Right Ventricle
5. From: ________ → Left Atrium
6. To: ________ ← Left Atrium
7. To: ________ ← Left Ventricle
```

And arrows pointing to/from chambers and vessels.

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Solution:

1. From: *Superior and Inferior Vena Cava*
→ Deoxygenated blood from the body enters the right atrium.

2. To: *Right Ventricle*
→ Blood flows from the right atrium to the right ventricle.

3. From: *Right Atrium*
→ The right atrium pumps blood into the right ventricle.

4. To: *Pulmonary Artery*
→ The right ventricle pumps blood to the lungs via the pulmonary artery.

5. From: *Pulmonary Veins*
→ Oxygenated blood from the lungs enters the left atrium.

6. To: *Left Ventricle*
→ Blood flows from the left atrium to the left ventricle.

7. To: *Aorta*
→ The left ventricle pumps oxygenated blood into the aorta to supply the body.

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Final Answer (fill in the blanks):

1. From: *Superior and Inferior Vena Cava*
2. To: *Right Ventricle*
3. From: *Right Atrium*
4. To: *Pulmonary Artery*
5. From: *Pulmonary Veins*
6. To: *Left Ventricle*
7. To: *Aorta*

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Explanation:

- Right side of the heart handles deoxygenated blood from the body → lungs.
- Left side handles oxygenated blood from the lungs → body.
- Valves ensure one-way flow (e.g., tricuspid between atrium and ventricle).
- The pulmonary arteries carry deoxygenated blood to the lungs; pulmonary veins carry oxygenated blood back.

If your diagram has different labels or more details (like valves or specific vessels), feel free to describe them, and I’ll adjust the answer accordingly!