What is Humans in Year 4 Science (KSSR)?
The Humans chapter covers the respiratory system, excretion, and sensory responses. The human respiratory organs are the nose, trachea, and lungs — gas exchange occurs in the lungs where oxygen is inhaled and carbon dioxide is exhaled.
Chapter Summary
The Humans chapter covers the respiratory system, excretion, and sensory responses. The human respiratory organs are the nose, trachea, and lungs — gas exchange occurs in the lungs where oxygen is inhaled and carbon dioxide is exhaled. Breathing rate is affected by the type of activity: vigorous (badminton), moderate (cycling), or passive (reading).
What You Will Learn
- Respiratory organs: nose, trachea, lungs
- Gas exchange of O₂ and CO₂ in the lungs
- Breathing rate and physical activity
- Excretion: skin, lungs, kidneys
- Egestion through the anus
- Stimuli and Responses
- Sense Organs: eyes, nose, ears, tongue, skin
7 topics with full-colour infographic notes + labelled diagrams
Unlock Chapter 2 — RM19 →or Try Chapter 1 for Free firstSample Question (Free)
1 of 8 questionsWhat are the human respiratory organs?
- Nose, trachea and lungs✓ Correct answer
- Kidneys, skin and lungs
- Nose, anus and lungs
- Eyes, ears and nose
+7 more questions for this chapter
80 interactive quiz questions across 10 chapters
Frequently Asked Questions
What are the human respiratory organs?
Nose, trachea and lungs.
What is taught in the Humans chapter of Year 4 Science?
The Humans chapter covers the respiratory system, excretion, and sensory responses. The human respiratory organs are the nose, trachea, and lungs — gas exchange occurs in the lungs where oxygen is inhaled and carbon dioxide is exhaled. Breathing rate is affected by the type of activity: vigorous (badminton), moderate (cycling), or passive (reading).
What are the main topics in Humans?
Main topics: Respiratory organs: nose, trachea, lungs; Gas exchange of O₂ and CO₂ in the lungs; Breathing rate and physical activity; Excretion: skin, lungs, kidneys; Egestion through the anus; Stimuli and Responses; Sense Organs: eyes, nose, ears, tongue, skin.
Confused by a science term? Check the Year 4 Science Glossary (340+ terms) →