Educational worksheet illustrating the components of blood, including plasma and corpuscles, with space to identify functions.

Let's solve the problem step by step based on the image you described. The worksheet is titled "Plasma + Corpuscles" and shows a test tube with blood components separated after centrifugation. The goal is to identify each blood component and its function.

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🔬 Understanding Centrifuged Blood:

When blood is centrifuged, it separates into layers due to differences in density:

1. Top Layer (Yellow) – Plasma
2. Middle Thin Layer (Pale) – Buffy Coat (contains white blood cells and platelets)
3. Bottom Layer (Red) – Red Blood Cells (RBCs)

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🧪 Identify the Components from the Diagram:

From top to bottom in the test tube:

1. Yellow Layer → Plasma
2. Thin White/Pale Layer → Buffy Coat (includes White Blood Cells (WBCs) and Platelets)
3. Red Layer → Red Blood Cells (RBCs)

So the four blood components shown are:
- Plasma
- White Blood Cells (Leukocytes)
- Platelets (Thrombocytes)
- Red Blood Cells (Erythrocytes)

Even though the buffy coat contains both WBCs and platelets, they are often listed separately for function.

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✔ Matching Components to Functions:

Let’s now match each blood component with its function.

| BLOOD COMPONENT | FUNCTION |
|------------------|---------|
| Plasma | Transports nutrients, hormones, waste products, and helps maintain body temperature and pH balance. It also carries clotting factors. |
| Red Blood Cells (RBCs) | Carry oxygen from the lungs to tissues and return carbon dioxide to the lungs for exhalation. Contain hemoglobin. |
| White Blood Cells (WBCs) | Fight infections and defend the body against pathogens (part of the immune system). |
| Platelets (Thrombocytes) | Help in blood clotting to prevent excessive bleeding when injury occurs. |

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📝 Final Answer (Filling in the Worksheet):

Here’s how you would fill in the blanks:

#### From Top to Bottom (Matching the Dotted Lines):

1. BLOOD COMPONENT: Plasma
→ FUNCTION: Transports nutrients, hormones, and waste; maintains pH and fluid balance.

2. BLOOD COMPONENT: White Blood Cells
→ FUNCTION: Defend the body against infections and foreign invaders.

3. BLOOD COMPONENT: Platelets
→ FUNCTION: Help form clots to stop bleeding.

4. BLOOD COMPONENT: Red Blood Cells
→ FUNCTION: Carry oxygen from lungs to tissues and return carbon dioxide to lungs.

> ⚠️ Note: The order in the diagram may vary slightly depending on how the lines connect. But typically, the topmost layer is plasma, then buffy coat (WBCs & platelets), then RBCs at the bottom.

If the worksheet shows three main layers, but asks for four components, it's likely separating the buffy coat into two parts (WBCs and platelets).

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💡 Summary:

- Plasma: Liquid matrix — transport and regulation.
- RBCs: Oxygen transport.
- WBCs: Immune defense.
- Platelets: Clotting.

This activity teaches students about the composition and functions of blood components after centrifugation.

✔ You can now complete the worksheet by filling in the boxes accordingly!