Mae dwy aren yn y corff dynol. Swyddogaeth arennau yw glanhau llygredd a deunydd diangen o'r gwaed a chynhyrchu troeth.
 | |
| Enghraifft o'r canlynol | math o organ, dosbarth o endidau anatomegol  |
|---|---|
| Math | organ wrinol, endid anatomegol arbennig, organ anifail |
| Rhan o | system wrin, System endocrinaidd |
| Yn cynnwys | nephron |
 Ffeiliau perthnasol ar Gomin Wicimedia | |
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