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Definition
| Tiny sacs of lung tissue specialized for the movement of gases between air and blood. |
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Definition
| A muscular opening at the end of the rectum through which waste material is eliminated from the body. |
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Definition
| The largest artery in the body; receives blood from the left ventricle. |
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Definition
| A blood vessel that carries blood away from the heart. |
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Definition
| Each of the two upper chambers of the heart that receives blood that comes into the heart. |
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Definition
| The passages that direct air into the lungs. |
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Definition
| A tiny blood vessel where substances are exchanged between the blood and the body cells. |
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Definition
| A large, dome-shaped muscle that plays an important role in breathing. |
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Definition
| A muscular tube that connects the mouth to the stomach. |
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Definition
| The organ that stores bile after it is produced by the liver. |
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Term
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Definition
| A hollow, muscular organ that pumps blood throughout the body. |
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Definition
| The last section of the digestive system, where water is absorbed into the bloodstream and the remaining material is eliminated from the body. |
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Definition
| The voice box; located in the top part of the trachea, underneath the epiglottis. |
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Term
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Definition
| The main organs of the respiratory system. |
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Definition
| The throat; part of both the respiratory and digestive systems. |
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Definition
| A cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body. |
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Term
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Definition
| The thin layer of tissue forming the natural outer covering of the body of a person or animal. |
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Term
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Definition
| The part of the digestive system in which most chemical digestion takes place. |
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Definition
| The thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system. |
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Term
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Definition
| A J-shaped, muscular pouch located in the abdomen. |
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Definition
| The windpipe; a passage through which air moves in the respiratory system. |
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Definition
| A blood vessel that carries blood back to the heart. |
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Definition
| Each of the two lower chambers of the heart that pumps blood out of the heart. |
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Term
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Definition
| A blood cell that fights disease. |
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