Circulatory System Worksheets for Kids - Free Printable

The image shows an educational activity for learning the human circulatory system. It features a diagram of a human body with major blood vessels and organs illustrated in red (arteries) and blue (veins). The goal is to label the correct names of the blood vessels and structures by matching the labels provided on small cards around the diagram.

Here’s how to solve this labeling task:

Step 1: Understand the Circulatory System

- Arteries carry oxygenated blood away from the heart (except pulmonary arteries).
- Veins carry deoxygenated blood toward the heart (except pulmonary veins).
- The heart pumps blood throughout the body.
- Key vessels include:
- Aorta: Largest artery, carries blood from the heart to the body.
- Superior Vena Cava & Inferior Vena Cava: Return deoxygenated blood from the upper and lower body to the heart.
- Pulmonary Arteries & Veins: Connect the heart to the lungs.
- Carotid Artery: Supplies blood to the head and brain.
- Jugular Vein: Drains blood from the head.
- Femoral Artery & Vein: Supply and drain blood from the legs.
- Brachial Artery & Vein: In the arms.
- Renal Artery & Vein: To and from the kidneys.
- Hepatic Portal Vein: Carries blood from the digestive tract to the liver (not labeled here).

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Step 2: Match Labels to the Diagram

Using the labeled cards, match them to their correct locations on the diagram:

#### Left Side (Left side of the body):
1. Femoral Artery → Lower leg (thigh), left side
2. Superior Vena Cava → Large blue vessel returning blood from head/upper body to the heart (top of heart)
3. Inferior Vena Cava → Blue vessel from lower body to heart (below the heart)
4. Thigh Artery → Likely refers to femoral artery; may be redundant or mislabeled — but matches femoral artery
5. Thigh Vein → Matches femoral vein (blue vessel in thigh)
6. Renal Vein → Blue vessel from kidney to inferior vena cava (on each side, near waist)
7. Carotid Artery → Red vessel going up the neck to the head

#### Right Side (Right side of the body):
1. Brachial Artery → Red vessel in upper arm (arm region)
2. Brachial Vein → Blue vessel in upper arm
3. Femoral Vein → Blue vessel in the leg (thigh)
4. Renal Artery → Red vessel from the aorta to the kidney
5. Aorta → Large red vessel emerging from the heart (descending down the back)
6. Heart → Central organ in the chest
7. Jugular Vein → Blue vessel draining blood from the head (neck area)

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Final Matching Guide:

| Label | Location |
|------|---------|
| Femoral Artery | Thigh, red vessel |
| Superior Vena Cava | Top of heart, blue vessel from head |
| Inferior Vena Cava | Bottom of heart, blue vessel from legs |
| Thigh Artery | Same as Femoral Artery |
| Thigh Vein | Same as Femoral Vein |
| Renal Vein | Blue vessel from kidney |
| Carotid Artery | Neck, red vessel going to head |
| Brachial Artery | Upper arm, red |
| Brachial Vein | Upper arm, blue |
| Femoral Vein | Thigh, blue |
| Renal Artery | Red vessel to kidney |
| Aorta | Large red vessel from heart down spine |
| Heart | Center of chest |
| Jugular Vein | Neck, blue vessel from head |

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Explanation:

This activity helps students learn the anatomy of the circulatory system through hands-on labeling. Correctly identifying arteries (red) and veins (blue) reinforces understanding of blood flow direction. For example:
- The aorta branches into systemic arteries like the carotid (to head) and femoral (to legs).
- Veins return blood to the heart via superior/inferior vena cava.
- Renal vessels supply the kidneys, and jugular veins drain the head.

By placing the labels correctly, students build spatial and functional knowledge of the circulatory system.

✔ Solution: Place each label on the corresponding structure on the diagram based on location, color (red = artery, blue = vein), and function.