Year 6 The Circulatory System Worksheet - Intermediate

Year 6 The Circulatory System worksheet for Year 6 (Key Stage 2 / Year 3-6 (Ages 7-11)). Intermediate 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 Bodyintermediate

29 views

The Circulatory System: Heart, Blood and Healthy Choices

Year 6 • Ages 10–11 • Intermediate

Name:

Date:

Score:

Instructions: Explore how the heart, blood and blood vessels work together, then consider how lifestyle choices affect the circulatory system. Read each question carefully and write your answers in the boxes; use evidence from the data where asked.

Label the Heart

Use the heart illustration and its numbered markers to identify each part. Choose names from the word bank shown with the diagram. Write each label beside the matching number.

Word Bank

Left AtriumAortaRight VentriclePulmonary ArteryLeft VentricleRight Atrium

Blood Vessels: Structure and Function

Use the word bank to complete each sentence. Think about the direction blood travels and the structure of each vessel. Use each word once.

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

1. Blood vessels that carry blood away from the heart are called ___.

2. Blood vessels that carry blood towards the heart are called ___.

3. Very tiny vessels where substances pass between blood and body cells are called ___.

4. Blood returning from the body travels to the right side of the heart, which pumps it to the ___.

5. Blood picks up ___ in the lungs before returning to the left side of the heart.

What Does Blood Do?

Choose the best answer for each question. Circle one option on each line. Think about the different jobs performed by blood and its components.

1. Which part of blood carries oxygen around the body?

2. Which blood component helps the body fight germs?

3. What is one important job of platelets?

4. What does plasma mainly do?

Exercise and Heart Rate

Study the measurements in the table. Heart rate is measured in beats per minute (bpm). Answer the questions using the table, and show any subtraction in your working.

Activity	Resting heart rate (bpm)	Heart rate after activity (bpm)	Increase (bpm)
Reading quietly	72	72	0
Brisk walking	72	108	36
Skipping	72	144	72
Running	72	156	84

1. Which activity produced the highest heart rate?

2. By how many bpm did heart rate increase after brisk walking?

3. How many bpm higher was the heart rate after running than after skipping?

4. Give one reason the heart beats faster during exercise.

Healthy Choices and the Circulatory System

Select the most accurate answer for each question. Remember that a balanced diet and regular physical activity support health, while smoking and misusing drugs can harm the body. Medicines should only be taken as directed by a trusted adult or health professional.

1. Which choice best supports a healthy heart?

2. Why is a varied, balanced diet helpful to the body?

3. What can smoking do to the circulatory system?

4. What is the safest approach to medicines?

Explain the Journey of Blood

Write a clear explanation of how blood travels through the heart, lungs and body. Include the roles of the right and left sides of the heart, and use the words oxygen-rich and oxygen-poor accurately. Aim for three or four connected sentences.

Explain the journey of blood from the body to the heart, to the lungs, back to the heart and out to the body.

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 ; lungs ; oxygen

Activity 3: red blood cells ; white blood cells ; help blood clot ; carries dissolved substances

Activity 4: Running ; 36 bpm ; 12 bpm ; The heart beats faster to deliver more oxygen and nutrients to working muscles and carry away waste products.

Activity 5: regular physical activity ; it provides nutrients for growth and health ; harm the heart and blood vessels ; use them only as directed by a trusted adult or health professional

Activity 6: Blood low in oxygen returns from the body to the right side of the heart. The right side pumps it to the lungs, where it takes in oxygen. Oxygen-rich blood returns to the left side of the heart, which pumps it around the body.