Human Body Systems
The systems that keep you alive, and how they depend on each other.
What this lesson covers
Human Body Systems is a 9-part Class 5 Science lesson. Each part makes one point and then hands over to the next, so it can be read in a sitting or picked up again at the part you stopped on. It defines the idea in plain words before using it, works through an example step by step, breaks the topic into its parts and compares them, shows where it is used outside the textbook, names the mistakes that cost marks in an exam, ends with a recap of what to remember.
How it begins
An organ is a body part with a particular job, the heart, a lung, the stomach. A group of organs working together on one task is an organ system. The important idea in this topic is not the list of systems. It is that no system works alone: they constantly depend on each other.
The 9 parts
- Organs working as a team
- The main systems
- How they connect
- What happens when you run
- Why your heart has two sides
- Looking after your systems
- Where it usually goes wrong
- What to remember
- Watch one worked through
Practise Human Body Systems
Everything on QuizByt for Class 5 Science that goes with this lesson: read it first, then test yourself while it is fresh.
🧠 6 quizzes on Human Body Systems (3 easy, 2 medium, 1 hard)
Work up from easy to hard: the hard quiz asks the Class 5 exam-style questions on Human Body Systems.
🖨️ Printable worksheet
Human Body Systems on paper for Class 5, with room to write the working out. Preview the first page free.
🎮 Games for Class 5 Science
Memory and reasoning games at the right level for Class 5. Passing a quiz on Human Body Systems earns the credits that open them.
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