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15
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What makes up the locomotor system?
The skeletal system and skeletal muscles
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15
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The locomotor system works with the ______ to move the body.
Bones
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15
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Muscles that work in pairs are called _____.
Antagonists
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15
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When the muscle _____, the bones return to their original position.
relaxes
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15
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Describe the Extending Movements
The biceps relaxes and the triceps contacts. The triceps pulls the ulna, so the arm straightens.
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15
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What happens when a muscle receives an order?
It contracts and pulls the bones attached to it
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15
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What is an example of an antagonistic pair of muscles?
Biceps and triceps
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15
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The locomotor system receives orders from the ____ and ________.
Brain and spinal cord
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trap
No points!
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magnet
Take 15 points!
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×
gift
Win 20 points!
Okay!
×
lifesaver
Give 25 points!
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eraser
Reset score!
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shark
Other team loses 20 points!
Okay!
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fairy
Take points!
5
10
15
20
25
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baam
Lose 25 points!
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15
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Describe the Flexing Movement
The biceps contracts and the triceps relaxes. The biceps pulls the radius, so the arm bends at the elbow.
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monster
Reset all scores!
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star
Double points!
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shark
Other team loses 15 points!
Okay!
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lifesaver
Give 25 points!
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