Educational worksheet on the human circulatory system with interactive activities for learning anatomy and function.

Let's go through each part of the worksheet and solve it step by step.

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1. Learn the vocabulary. Copy.

You are asked to copy the words shown with their images:

- heart
- veins
- blood

✔ Simply write these words down as they are.

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2. Label its parts.

There is a diagram of the human body showing the circulatory system with arteries (red) and veins (blue), and a heart in the center.

You need to label the following key parts:

- Heart – located in the chest, central organ.
- Arteries – red vessels carrying blood away from the heart.
- Veins – blue vessels carrying blood toward the heart.
- Blood vessels – general term for both arteries and veins.
- Lungs – where oxygen enters the blood (though not labeled here, you may be expected to know that pulmonary circulation goes to lungs).

👉 Since this is a labeling task, you should:
- Label the heart.
- Label some arteries (e.g., aorta).
- Label some veins (e.g., vena cava).
- You might also label lungs, though they're not directly connected in this diagram.

💡 Tip: Arteries carry blood *away* from the heart (usually oxygenated), and veins carry blood *toward* the heart (usually deoxygenated). But note: pulmonary arteries carry deoxygenated blood to the lungs, and pulmonary veins bring oxygenated blood back.

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3. What is the function of the circulatory system? Tick.

Options:
- ☐ Absorb nutrients.
- ☐ Eliminate urine.
- ☐ Transport oxygen and nutrients.

✔ Correct answer: Transport oxygen and nutrients.

📌 Explanation:
- The circulatory system (also called the cardiovascular system) transports oxygen, nutrients, hormones, and waste products throughout the body.
- Absorbing nutrients happens in the digestive system (intestines).
- Eliminating urine is the job of the excretory system (kidneys, bladder).

✔️ So, tick: Transport oxygen and nutrients.

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4. Click on the words related to the circulatory system.

Words given:
- mouth
- veins
- transport
- lungs
- heart
- pump
- blood
- respiration

Now identify which ones are related to the circulatory system:

✔ Related:
- veins → part of blood vessels
- transport → main function of circulatory system
- lungs → involved in gas exchange (part of pulmonary circulation)
- heart → central organ
- pump → describes the heart’s action
- blood → what is transported

✘ Not directly related:
- mouth → part of digestive system
- respiration → process of breathing; related to respiratory system, but not directly to circulation (though linked)

So, click on:
✔ veins, transport, lungs, heart, pump, blood

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5. What do they do? Read and match.

Two images:
- A heart
- A bag of blood (AB type)

Two statements:
1. "It pumps the blood around the body."
2. "It transports nutrients and oxygen."

Match them:

🔹 Heart → "It pumps the blood around the body." ✔
🔹 Blood → "It transports nutrients and oxygen." ✔

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✔ Final Answers Summary:

#### 1. Vocabulary:
- heart
- veins
- blood

#### 2. Labeling:
Label: heart, arteries, veins, lungs (if visible) on the diagram.

#### 3. Function:
✔ Transport oxygen and nutrients.

#### 4. Related words:
✔ veins, transport, lungs, heart, pump, blood

#### 5. Matching:
- Heart → It pumps the blood around the body.
- Blood → It transports nutrients and oxygen.

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Let me know if you'd like a printable version or help drawing the labels!