Chapter 2 of 12
Revision Notes
Skeletal System — Revision Notes
ICSE · Class 5 · Science
Skeletal System revision notes for ICSE Class 5 Science: 4 topics in quick points. Part of the ICSE Class 5 Science syllabus.
45 questions40 flashcards4 concepts
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Key Topics to Revise
1
Functions of the Skeletal System
- The skeletal system gives shape and support to the body.
- It protects delicate internal organs like the brain, heart, and lungs.
- Bones help in movement with the help of muscles and joints.
2
Structure of Bones and Joints
- Bones are made of calcium, phosphorus, and collagen.
- The outer part is hard and smooth; the inner part is spongy and contains bone marrow.
- Joints are places where two or more bones meet.
3
Parts of the Skeletal System
- Skull: 22 bones that protect the brain; only lower jaw is movable.
- Ribcage: 12 pairs of ribs and sternum; protects heart and lungs; last 2 pairs are floating ribs.
- Backbone: Made of 33 vertebrae; protects spinal cord; allows bending and twisting.
4
Types of Joints
- Movable joints allow movement; immovable joints do not.
- Hinge joint — allows forward and backward movement (e.g., elbow, knee).
- Ball and socket joint — allows movement in all directions (e.g., shoulder, hip).
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Full NotesKey Concepts
The skeletal system is the frameworkJoints are the places where twoMuscles are softStrong bones need calcium and vitamin
Frequently Asked Questions
What are the important topics in Skeletal System for ICSE Class 5 Science?
Key topics in Skeletal System include Functions of the Skeletal System, Structure of Bones and Joints, Parts of the Skeletal System, Types of Joints. Study these first, then practise questions on each for Class 5 exams.
How should I revise Skeletal System for Class 5 exams?
Learn the core ideas first, then work through the 45 practice questions on Skeletal System. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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