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9 Cards in this Set
- Front
- Back
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artery |
A type of blood vessel that carries blood away from the heart to other parts of the body. |
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capillary |
The smallest kind of blood vessel. |
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vein |
A type of blood vessel that carries blood from the cells back to the heart. |
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valve |
An opening that allows blood to flow in one direction but stops it from flowing in the other direction. |
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mucus |
A sticky, thick fluid that traps dust, germs, and other things that may be in the air. |
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trachea |
A tube that carries air from the throat to the lungs. |
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bronchioles |
Tubes that branch out from the bronchi. |
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air sacs |
Tiny thin-walled pouches in the lungs. |
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esophagus |
A tube in the throat with rings of muscle that help you to swallow food. |
