Human Body Systems
Year 6 students examine the major systems of the human body — including circulatory, respiratory, skeletal, muscular, and nervous — and how they work together to maintain health.
What You Need to Know
Key Concept Diagram
The circulatory system (heart, blood, vessels) transports oxygen, nutrients, and waste products around the body
The respiratory system (lungs, airways) exchanges oxygen from the air with carbon dioxide from the blood
The skeletal and muscular systems work together: muscles pull on bones to create movement
Body systems are interdependent — a problem in one system (e.g. cardiovascular disease) can affect others
Key Vocabulary
Circulatory system
The system of heart, blood, and blood vessels that moves substances around the body
Respiratory system
The organs involved in breathing: lungs, trachea, bronchi, and diaphragm
Skeletal system
The framework of bones that supports the body, protects organs, and enables movement
Interdependence
The way body systems rely on each other to function properly
Knowledge Check
Select the correct answer for each question. Click "Check Answer" to see if you are right.
Question 1
Which body system is responsible for delivering oxygen from the lungs to all body cells?
Question 2
What is the role of the diaphragm in the respiratory system?
Question 3
How do the skeletal and muscular systems work together?
Key Concepts Summary
- ●The circulatory system (heart, blood, vessels) transports oxygen, nutrients, and waste products around the body
- ●The respiratory system (lungs, airways) exchanges oxygen from the air with carbon dioxide from the blood
- ●The skeletal and muscular systems work together: muscles pull on bones to create movement
- ●Body systems are interdependent — a problem in one system (e.g. cardiovascular disease) can affect others