Science worksheet labeling parts of the human heart.

Since I can't view or access images directly, I can't see the specific diagram you're referring to. However, based on your description and the context of the worksheet — "Label the Parts of the Human Heart" — I can help you solve this common biology task by identifying the typical structures labeled in a human heart diagram.

Here’s how to approach it:

Common Structures of the Human Heart (Labeled in Diagrams):

1. Superior Vena Cava – Brings deoxygenated blood from the upper body into the right atrium.
2. Inferior Vena Cava – Brings deoxygenated blood from the lower body into the right atrium.
3. Right Atrium – Receives deoxygenated blood from the vena cavae.
4. Right Ventricle – Pumps deoxygenated blood to the lungs via the pulmonary artery.
5. Left Atrium – Receives oxygenated blood from the lungs via the pulmonary veins.
6. Left Ventricle – Pumps oxygenated blood to the body via the aorta.
7. Aorta – The largest artery; carries oxygenated blood from the left ventricle to the body.
8. Pulmonary Artery – Carries deoxygenated blood from the right ventricle to the lungs.
9. Pulmonary Veins – Carry oxygenated blood from the lungs to the left atrium.
10. Septum – Wall dividing the left and right sides of the heart.

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Now, let's match the numbered labels in your diagram (based on standard diagrams):

Assuming the numbers on your image are placed as follows (typical layout):

1. Top of the heart, where blood enters from the body → Likely the Superior Vena Cava
2. Bottom of the heart, where blood returns from the lower body → Likely the Inferior Vena Cava
3. Upper chamber on the right side → Right Atrium
4. Lower chamber on the right side → Right Ventricle
5. Lower chamber on the left side → Left Ventricle
6. Upper chamber on the left side → Left Atrium

But wait — looking at your word bank:
Word Bank: Left ventricle, Right ventricle, Aorta, Pulmonary artery, Left atrium, Right atrium

So the 6 labels must be selected from these six terms.

Let’s assume the diagram is a standard frontal view of the heart with the following placements:

- 1. Top of the heart → Aorta (arising from the left ventricle)
- 2. Large vessel entering top of the heart from above → Superior Vena Cava (but not in word bank) → Wait, this is a problem.

Wait — your word bank only includes:
Left ventricle, Right ventricle, Aorta, Pulmonary artery, Left atrium, Right atrium

So likely, the six numbered parts are only those six chambers and major vessels that are in the word bank.

Let’s map them:

1. Aorta — usually shown coming out of the left ventricle, curving upward from the top-left side.
2. Pulmonary artery — comes from the right ventricle, going toward the lungs.
3. Right atrium — upper right chamber
4. Right ventricle — lower right chamber
5. Left atrium — upper left chamber
6. Left ventricle — lower left chamber

So, assuming the diagram has:

- 1. Aorta (top of heart, arching up)
- 2. Pulmonary artery (coming from right ventricle)
- 3. Right atrium
- 4. Right ventricle
- 5. Left atrium
- 6. Left ventricle

Then the answers would be:

| Number | Part |
|--------|------|
| 1 | Aorta |
| 2 | Pulmonary artery |
| 3 | Right atrium |
| 4 | Right ventricle |
| 5 | Left atrium |
| 6 | Left ventricle |

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Final Answer:

1. Aorta
2. Pulmonary artery
3. Right atrium
4. Right ventricle
5. Left atrium
6. Left ventricle

> ✔ These are the most likely correct matches based on standard heart diagrams and the provided word bank.

If your diagram shows different positions, please describe the location of each number (e.g., “number 1 is at the top, curving to the left”), and I can adjust accordingly.