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1
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Makes up the heart.
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2
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Paired, external openings.
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3
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Largest portion of muscle.
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4
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Mostly found in joints and give flexibility.
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5
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Stores urine til it is excreted.
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6
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Connections of bone in the animal's body.
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9
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Long, fiber like structures that send messages from the body to the brain.
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10
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Control center of the nervous system.
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13
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Primary passage way to lungs.
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15
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Controls movement of internal organs.
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16
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Pathway of blood headed back to the heart.
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