Pledren
Organ mamalaidd sy'n casglu troeth yw pledren.
Mae troeth yn dod i mewn oddi wrth yr arennau, ac yn gadael trwy'r wrethra.
| Enghraifft o'r canlynol | math o organ, dosbarth o endidau anatomegol  |
|---|---|
| Math | organ wrinol, organ gyda cheudod organ, endid anatomegol arbennig |
| Rhan o | system wrin, llwybr wrinol is |
| Cysylltir gyda | wreter, wrethra |
 Ffeiliau perthnasol ar Gomin Wicimedia | |
Gweler hefyd
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