Year 6 The Circulatory System Worksheet - Beginner

Year 6 The Circulatory System worksheet for Year 6 (Key Stage 2 / Year 3-6 (Ages 7-11)). Beginner level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•Key Stage 2 / Year 3-6 (Ages 7-11)•Human Bodybeginner

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The Circulatory System: Heart, Blood and Healthy Choices

Year 6 | Ages 10–11 | Beginner

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Instructions: Work through the activities to explore how the heart, blood and blood vessels work together. Use the facts and data provided, and write your answers in the boxes. The final activities consider how exercise, diet and drugs can affect the circulatory system.

Label the Heart

Use the heart illustration and its numbered markers. Write the correct name beside each number. The word bank is shuffled, so check each label carefully.

Word Bank

Left AtriumAortaRight VentriclePulmonary ArteryLeft VentricleRight Atrium

Blood Vessels and Their Jobs

Complete each sentence using the word bank. Each word is used once. Think about the direction blood travels and the job each vessel does.

Word bank: capillaries, arteries, veins, oxygen, heart, lungs

1. __________ carry blood away from the heart.

2. __________ carry blood back towards the heart.

3. Tiny blood vessels where substances pass between blood and body cells are called __________.

4. The blood vessels that carry blood from the heart to the lungs are the pulmonary __________.

5. Blood picks up __________ in the lungs.

What Is in Blood?

Use the word bank to fill each gap. Match each blood component to its main job; the descriptions give you clues.

Word bank: plasma, red blood cells, white blood cells, platelets, oxygen

1. __________ carry oxygen around the body.

2. __________ help the body fight germs and infection.

3. __________ help blood clot and seal a cut.

4. The liquid part of blood, which carries cells and dissolved substances, is called __________.

5. Red blood cells carry __________ from the lungs to body cells.

Heart Rate and Exercise

Maya counted her pulse for one minute before and after exercise. Read the table and answer the questions. A pulse count is the number of heartbeats in one minute.

Activity	Before exercise (beats/min)	After exercise (beats/min)
Sitting	78	80
Brisk walking	78	112
Running	78	148

1. What was Maya’s pulse before each activity?

2. Which activity gave Maya the highest pulse after exercise?

3. How many beats per minute higher was her pulse after running than before running?

4. Why does the heart beat faster during exercise?

Healthy Choices and the Circulatory System

Choose the best answer for each question. Think about how regular activity, a balanced diet and drugs can affect the heart and blood vessels. In science, a drug is a substance that can change how the body works; some drugs are medicines, while others can be harmful.

1. Which habit helps keep the heart healthy?

2. Which food choice best supports a balanced diet?

3. What can smoking do to the circulatory system?

4. Why should medicines be taken only as directed by a trusted adult or health professional?

5. During exercise, why does the body need more oxygen?

Answer Key

Activity 1: 1. Left Atrium ; 2. Right Atrium ; 3. Left Ventricle ; 4. Right Ventricle ; 5. Aorta ; 6. Pulmonary Artery

Activity 2: arteries ; veins ; capillaries ; arteries ; oxygen

Activity 3: red blood cells ; white blood cells ; platelets ; plasma ; oxygen

Activity 4: 78 beats per minute ; Running ; 70 beats per minute ; The heart beats faster to deliver more oxygen and nutrients to working muscles and remove waste products more quickly.

Activity 5: Regular exercise ; A variety of foods, including fruit and vegetables ; Harm the heart and blood vessels ; They can affect how the body works ; Working muscles need more oxygen