Respiratory system and circulatory system worksheet - Free Printable

Task 1: Label the Parts of the Circulatory System

#### Provided Words:
- Artery
- Capillaries
- Heart
- Vein

#### Diagram Labels:
1. a. Heart: The central organ in the circulatory system that pumps blood.
2. b. Artery: Blood vessels that carry oxygenated blood away from the heart.
3. c. Capillaries: Tiny blood vessels where exchange of oxygen, nutrients, and waste occurs between blood and tissues.
4. d. Vein: Blood vessels that carry deoxygenated blood back to the heart.

#### Final Answer:
- a. HEART
- b. ARTERY
- c. CAPILLARIES
- d. VEIN

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Task 2: Match Sentences About the Circulatory System

#### Instructions:
Match the left-side phrases with the right-side phrases to form correct sentences about the circulatory system.

#### Left-Side Phrases:
1. The heart pumps
2. The blood carries
3. Blood vessels are
4. Arteries carry
5. Veins carry
6. Capillaries connect

#### Right-Side Phrases:
1. arteries and veins.
2. deoxygenated blood back to the heart.
3. blood around the body.
4. gases, nutrients, and fluid waste products.
5. oxygenated blood away from the heart.
6. long tubes that carry blood.

#### Matching Explanation:
1. The heart pumps → blood around the body.
- The heart is responsible for pumping blood throughout the body via the circulatory system.

2. The blood carries → gases, nutrients, and fluid waste products.
- Blood transports essential substances like oxygen, nutrients, and waste products to and from cells.

3. Blood vessels are → long tubes that carry blood.
- Blood vessels (arteries, veins, and capillaries) are tubular structures that transport blood.

4. Arteries carry → oxygenated blood away from the heart.
- Arteries transport oxygen-rich blood from the heart to the rest of the body.

5. Veins carry → deoxygenated blood back to the heart.
- Veins return oxygen-poor blood back to the heart.

6. Capillaries connect → arteries and veins.
- Capillaries link arteries and veins, facilitating the exchange of substances at the tissue level.

#### Final Matched Sentences:
1. The heart pumps blood around the body.
2. The blood carries gases, nutrients, and fluid waste products.
3. Blood vessels are long tubes that carry blood.
4. Arteries carry oxygenated blood away from the heart.
5. Veins carry deoxygenated blood back to the heart.
6. Capillaries connect arteries and veins.

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Final Answers:

#### Task 1:
- a. HEART
- b. ARTERY
- c. CAPILLARIES
- d. VEIN

#### Task 2:
1. The heart pumps blood around the body.
2. The blood carries gases, nutrients, and fluid waste products.
3. Blood vessels are long tubes that carry blood.
4. Arteries carry oxygenated blood away from the heart.
5. Veins carry deoxygenated blood back to the heart.
6. Capillaries connect arteries and veins.

Final Answer Box:
```plaintext
Task 1:
a. HEART
b. ARTERY
c. CAPILLARIES
d. VEIN

Task 2:
1. The heart pumps blood around the body.
2. The blood carries gases, nutrients, and fluid waste products.
3. Blood vessels are long tubes that carry blood.
4. Arteries carry oxygenated blood away from the heart.
5. Veins carry deoxygenated blood back to the heart.
6. Capillaries connect arteries and veins.
```