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Revision Notes

Skeletal System

ICSE · Class 5 · Science

Quick revision notes for Skeletal System — ICSE Class 5 Science. Key concepts, formulas, and definitions for last-minute revision.

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 Notes

Key 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 Skeletal System – Complete Concept Overview, Skeletal System - Complete Chapter Overview, Mind map showing the five major functions of the skeletal system, organized by category. These are the concepts ICSE Class 5 examiners draw on most — study them first, then practise related questions.
How to score full marks in Skeletal System — ICSE Class 5 Science?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and 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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