Interactive worksheet for identifying parts of the human heart.

Let's solve this "Drag and Drop the Parts of the Human Heart" worksheet step by step.

We are given a diagram of the human heart with blank labels pointing to different parts. Below the diagram, there is a list of terms that need to be matched to the correct locations on the heart.

---

🔍 Step-by-step Analysis:

First, let’s understand the anatomy of the human heart:

The heart has:
- Four chambers:
- Right Atrium (Auricle) → receives deoxygenated blood from body
- Right Ventricle → pumps blood to lungs
- Left Atrium (Auricle) → receives oxygenated blood from lungs
- Left Ventricle → pumps oxygenated blood to the body

- Major blood vessels:
- Superior Vena Cava → brings deoxygenated blood from upper body to right atrium
- Inferior Vena Cava → brings deoxygenated blood from lower body to right atrium
- Pulmonary Artery → carries deoxygenated blood from right ventricle to lungs
- Pulmonary Veins → carry oxygenated blood from lungs to left atrium
- Aorta → carries oxygenated blood from left ventricle to the body

- Septum → wall dividing the left and right sides of the heart

---

Now, let's match each label based on the diagram and flow of blood:

#### ✔ Top of the Heart:
1. Topmost arrow pointing to large vessel coming out of the left ventricle → This is the AORTA
- It carries oxygen-rich blood to the body.

2. Two vessels going from the heart to the lungs (from right ventricle) → These are the PULMONARY ARTERY
- Note: There are two pulmonary arteries (right and left), but labeled as one group.

3. Two vessels bringing blood back from lungs to the left atrium → These are the PULMONARY VEINS

4. Vessel entering the top of the right atrium (upper body) → SUPERIOR VENACAVA

5. Vessel entering the bottom of the right atrium (lower body) → INFERIOR VENACAVA

6. Right side chamber above the right ventricle → RIGHT AURICLE (another name for right atrium)

7. Left side chamber above the left ventricle → LEFT AURICLE (left atrium)

8. Bottom right chamber → RIGHT VENTRICLE

9. Bottom left chamber → LEFT VENTRICLE

10. Wall between the left and right sides of the heart → SEPTUM

---

🧩 Final Labeling (based on positions):

Let’s assign each term to its correct position in the diagram:

From top to bottom and left to right:

1. Top center (large vessel exiting left ventricle): AORTA
2. Top right (two vessels going to lungs): PULMONARY ARTERY
3. Middle right (two vessels returning from lungs): PULMONARY VEIN
4. Upper left (vessel entering right atrium from upper body): SUPERIOR VENACAVA
5. Lower left (vessel entering right atrium from lower body): INFERIOR VENACAVA
6. Right atrium (top right chamber): RIGHT AURICLE
7. Left atrium (top left chamber): LEFT AURICLE
8. Right ventricle (bottom right chamber): RIGHT VENTRICLE
9. Left ventricle (bottom left chamber): LEFT VENTRICLE
10. Center wall dividing heart: SEPTUM

---

✔ Correct Answers (Matching Labels to Diagram):

| Position in Diagram | Correct Term |
|---------------------|--------------|
| Top center (outgoing vessel from left ventricle) | AORTA |
| Top right (two vessels to lungs) | PULMONARY ARTERY |
| Middle right (two vessels from lungs) | PULMONARY VEIN |
| Upper left (inlet from upper body) | SUPERIOR VENACAVA |
| Lower left (inlet from lower body) | INFERIOR VENACAVA |
| Right atrium | RIGHT AURICLE |
| Left atrium | LEFT AURICLE |
| Right ventricle | RIGHT VENTRICLE |
| Left ventricle | LEFT VENTRICLE |
| Wall between chambers | SEPTUM |

---

📌 Summary:

This diagram shows the double circulation system of the heart:
- Deoxygenated blood enters via venae cavae → right atrium → right ventricle → pulmonary artery → lungs
- Oxygenated blood returns via pulmonary veins → left atrium → left ventricle → aorta → body

All parts must be correctly labeled to show proper blood flow.

✔ The task is now solved! You can drag and drop the terms accordingly.

Let me know if you'd like a printable version or a labeled image explanation.