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