Sure! Here are the descriptions for the words you've provided:
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Hemoglobin: A protein in red blood cells that carries oxygen from the lungs to the rest of the body and returns carbon dioxide to the lungs.
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Diaphragm: A muscle that separates the chest from the abdomen and plays a crucial role in the breathing process by contracting and relaxing to allow air in and out of the lungs.
You can match the words with their respective descriptions accordingly.