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Definition
| The main organ of the respiratory system |
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Definition
| A tiny blood vessel that allows gases & nutrients to pass from blood to cells |
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Definition
The muscle that pumps blood through blood vessels to all parts of the body |
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Term
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Definition
| A blood vessel that carries blood away from the heart |
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Term
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Definition
| A large blood vessel that returns blood to the heart |
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Term
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Definition
A group of organs and body parts that work together to perform a job |
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Term
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Definition
| Tube that divides to form a system of tubes in your lungs |
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Term
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Definition
| tubes blood flows through |
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