Standard Science Primary 5 Systems

Which system protects the delicate heart and lungs?

A Respiratory System
B Muscular System
C Digestive System
D Skeletal System
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Worked Solution

Step 1: Protection of internal organs is a key function of bones. Step 2: The ribcage specifically protects the heart and lungs. Step 3: The ribcage is part of the skeletal system.

Correct answer: Skeletal System

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