Human Blood Circulatory System Diagram for Educational Use

Let's solve the labeling task for the Human Blood Circulatory System diagram step by step.

Step 1: Understand the Diagram

This diagram shows the double circulatory system in humans:
- Pulmonary circulation: Blood flow between the heart and lungs.
- Systemic circulation: Blood flow between the heart and the rest of the body.

The heart is divided into two sides:
- Right side: Receives oxygen-poor (carbon dioxide-rich) blood from the body and pumps it to the lungs.
- Left side: Receives oxygen-rich blood from the lungs and pumps it to the body.

Blood vessels are color-coded:
- Red: Oxygen-rich blood
- Blue: Carbon dioxide-rich (deoxygenated) blood

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Step 2: Identify the Components

We need to label the blank boxes using the provided options:

Available labels:
- LEFT SIDED HEART
- BLOOD RICH IN OXYGEN
- RIGHT SIDED HEART
- HUMAN BODY
- LUNGS
- HEART
- BLOOD RICH IN CARBON DIOXIDE

Now, match each blank to the correct label based on the diagram.

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Step 3: Label Each Box

Let’s go through each blank box in order (from top to bottom):

#### 1. Top right box pointing to the lungs
- The pink organ at the top is the LUNGS.
- ✔ Label: LUNGS

#### 2. Box pointing to the red vessel going from heart to lungs
- This is a pulmonary artery carrying deoxygenated blood from the right side of the heart to the lungs.
- But since the blood here is rich in carbon dioxide, and this is a blue-colored vessel in some diagrams, but here it's shown in red — wait, check carefully.

Wait! In this diagram:
- Red vessels = oxygen-rich blood
- Blue vessels = oxygen-poor (CO₂-rich) blood

So:
- The vessel from the heart to the lungs is blue → carries blood rich in CO₂
- The vessel from lungs to heart is red → carries oxygen-rich blood

But look at the vessels:
- Blue vessel from heart → lungs → pulmonary artery → carries CO₂-rich blood
- Red vessel from lungs → heart → pulmonary vein → carries O₂-rich blood

Now, let’s assign:

#### 3. Box pointing to the blue vessel from the heart to the lungs
- This is blood rich in carbon dioxide
- ✔ Label: BLOOD RICH IN CARBON DIOXIDE

#### 4. Box pointing to the red vessel from the lungs to the heart
- This is oxygen-rich blood
- ✔ Label: BLOOD RICH IN OXYGEN

#### 5. Box pointing to the left side of the heart
- The left side receives oxygenated blood from lungs and pumps it to the body.
- ✔ Label: LEFT SIDED HEART

#### 6. Box pointing to the right side of the heart
- Receives deoxygenated blood from the body and pumps it to lungs.
- ✔ Label: RIGHT SIDED HEART

#### 7. Box pointing to the large red vessel going from heart to the body
- This is the aorta, carrying oxygen-rich blood to the body.
- So, this is BLOOD RICH IN OXYGEN (already used), but we can use it again? Wait — no, we have only one copy per label?

Actually, labels can be reused if needed. But in this case, likely each blank has one unique label.

Wait — let’s list all blanks:

There are 7 blank boxes:

1. Top right: points to lungs → LUNGS
2. Right side, middle: points to right side of heart → RIGHT SIDED HEART
3. Left side, middle: points to left side of heart → LEFT SIDED HEART
4. Bottom left: points to veins returning to heart → HUMAN BODY
5. Bottom center: points to heart → HEART
6. Middle left: points to blue vessel from body to heart → BLOOD RICH IN CARBON DIOXIDE
7. Middle right: points to red vessel from heart to body → BLOOD RICH IN OXYGEN

Wait — actually, there are 7 blanks, but let’s count them visually:

From the image:

- One blank pointing to lungs
- One pointing to right side of heart
- One pointing to left side of heart
- One pointing to heart
- One pointing to human body (the lower part)
- One pointing to blood rich in CO₂ (blue vessel from body to heart)
- One pointing to blood rich in O₂ (red vessel from heart to body)

So:

Final Labels:

1. Top right box (pointing to lungs) → LUNGS
2. Right side, middle (pointing to right atrium/ventricle) → RIGHT SIDED HEART
3. Left side, middle (pointing to left atrium/ventricle) → LEFT SIDED HEART
4. Bottom left (pointing to venous return from body) → HUMAN BODY
5. Center bottom (pointing to heart) → HEART
6. Middle left (pointing to blue vessel from body to heart) → BLOOD RICH IN CARBON DIOXIDE
7. Middle right (pointing to red vessel from heart to body) → BLOOD RICH IN OXYGEN

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✔ Final Answer:

| Blank Position | Label |
|----------------|-------|
| Top right (lungs) | LUNGS |
| Right side (heart) | RIGHT SIDED HEART |
| Left side (heart) | LEFT SIDED HEART |
| Bottom left (body) | HUMAN BODY |
| Center bottom (heart) | HEART |
| Middle left (blue vessel) | BLOOD RICH IN CARBON DIOXIDE |
| Middle right (red vessel) | BLOOD RICH IN OXYGEN |

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Summary of Flow:

1. Deoxygenated blood (CO₂-rich) from HUMAN BODY → enters RIGHT SIDED HEART → pumped to LUNGS via pulmonary arteries.
2. In LUNGS, blood picks up oxygen and releases CO₂.
3. Oxygen-rich blood returns to LEFT SIDED HEART via pulmonary veins.
4. LEFT SIDED HEART pumps BLOOD RICH IN OXYGEN to the HUMAN BODY via the aorta.

This completes the double circulation in the human body.

Let me know if you'd like this as a labeled version or printable answer!