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Human Body & Health

Grade 5 · On-level practice · 8 questions · Version PG-1HO5UFW-1Y2A

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1.What maintains stable internal conditions?
2.What is the immune system's job?
3.Why is a balanced diet useful?
4.How do lungs and circulation interact?
5.Which system sends messages through nerves?
6.Why does heart rate rise during exercise?
7.How do vaccines help?
8.What do kidneys remove from blood?

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 14
  1. What maintains stable internal conditions?Homeostasis
  2. What is the immune system's job?Defend against harmful pathogens
  3. Why is a balanced diet useful?It supplies varied nutrients
  4. How do lungs and circulation interact?Lungs add oxygen to blood, which carries it to cells
  5. Which system sends messages through nerves?The nervous system
  6. Why does heart rate rise during exercise?Muscles need oxygen and nutrients faster
  7. How do vaccines help?They prepare immunity to recognize a pathogen
  8. What do kidneys remove from blood?Wastes and extra water

Worked example

Connect a structure to its function and explain how body systems work together.

Common mistake

Naming an organ without explaining its system role.

Helpful hint

Trace what enters, changes, and leaves the system.