Blood Flow through the Heart interactive worksheet - Free Printable

The task is to label the parts of the heart diagram using the provided word bank. Let's solve it step by step:

Step 1: Understand the Heart Diagram

The diagram shows the human heart with labeled parts (1–10). The heart has four chambers:
- Two atria (top chambers): Right atrium and left atrium.
- Two ventricles (bottom chambers): Right ventricle and left ventricle.

Additionally, there are valves and major blood vessels connected to the heart.

Step 2: Identify Each Part Using the Word Bank

We will match each numbered part in the diagram with the correct term from the word bank.

#### Word Bank:
- aorta
- left ventricle
- right atrium
- vena cava
- pulmonary artery
- pulmonary vein
- tricuspid valve
- bicuspid (mitral) valve
- left atrium
- right ventricle

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Labeling the Diagram:

1. Number 1: This is the large vessel entering the top of the heart. It is the vena cava, which brings deoxygenated blood from the body into the right atrium.
- Answer: vena cava

2. Number 2: This is the chamber at the top right of the heart. It receives deoxygenated blood from the vena cava.
- Answer: right atrium

3. Number 3: This is the valve between the right atrium and the right ventricle. It is the tricuspid valve, which prevents backflow of blood when the ventricle contracts.
- Answer: tricuspid valve

4. Number 4: This is the chamber at the bottom right of the heart. It pumps deoxygenated blood to the lungs via the pulmonary artery.
- Answer: right ventricle

5. Number 5: This is the vessel exiting the right ventricle and going to the lungs. It is the pulmonary artery.
- Answer: pulmonary artery

6. Number 6: This is the valve between the left atrium and the left ventricle. It is the bicuspid (mitral) valve, which prevents backflow of blood when the ventricle contracts.
- Answer: bicuspid (mitral) valve

7. Number 7: This is the chamber at the top left of the heart. It receives oxygenated blood from the lungs via the pulmonary veins.
- Answer: left atrium

8. Number 8: This is the chamber at the bottom left of the heart. It pumps oxygenated blood out to the body via the aorta.
- Answer: left ventricle

9. Number 9: This is the large vessel exiting the left ventricle and going to the body. It is the aorta.
- Answer: aorta

10. Number 10: These are the vessels entering the left atrium from the lungs. They are the pulmonary veins, which bring oxygenated blood back to the heart.
- Answer: pulmonary vein

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Final Answer:

1. vena cava
2. right atrium
3. tricuspid valve
4. right ventricle
5. pulmonary artery
6. bicuspid (mitral) valve
7. left atrium
8. left ventricle
9. aorta
10. pulmonary vein

Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & \text{vena cava} \\
2. & \text{right atrium} \\
3. & \text{tricuspid valve} \\
4. & \text{right ventricle} \\
5. & \text{pulmonary artery} \\
6. & \text{bicuspid (mitral) valve} \\
7. & \text{left atrium} \\
8. & \text{left ventricle} \\
9. & \text{aorta} \\
10. & \text{pulmonary vein} \\
\end{array}
}
\]