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Bones and Muscles
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How many bones are in the adult human body?
206
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Where are blood cells made?
Bone marrow
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Which mineral makes bones strong?
Calcium
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What is one main function of the skeleton?
Protection
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Why is the skeleton important?
It protects organs and helps movement
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What are bones made of?
Living tissue
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What connects bone to bone at a joint?
Ligaments
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Can muscles push bones?
No
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Which muscle contracts to lower the arm down?
Triceps
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Which bones protect the spinal cord?
Vertebrae
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Which bone protects the brain?
Skull
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How do muscles move bones?
By pulling
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Which muscle contracts to lift the arm up?
Biceps
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What protects the ends of bones?
Cartilage
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What do we call muscles that work in pairs?
Antagonistic muscles
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What fluid helps joints move smoothly?
Synovial fluid
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Which bones protect the heart and lungs?
Ribs
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What connects muscles to bones?
Tendons
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What is one function of joints?
Allow movement
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What does the skeleton help the body do?
Move and stay supported
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