| Erythrocytes |
| Figure 17.3 |
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| Biconcave
disk – |
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| Optimizes
both volume |
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| and
surface area. |
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| Volume
important for |
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| storage. |
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| Surface
area important |
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| for
transport. |
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| O2
& CO2 |
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| carries |
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| hemoglobin |
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