Prosesau bywyd: Bodau dynol | |
| Datblygiad ffoetws | ![]() |
| Organau atgenhedlu benywaidd | ![]() |
| Cylchrediad ffoetws | ![]() |
| Chwarren bitwidol | ![]() |
| Organ atgenhedlu gwrywaidd | ![]() |
| Ffrwythloniad | |
| Synaps | ![]() |
| System nerfol ddynol | ![]() |
| Llygad | ![]() |
| Iris | ![]() |
| System dreulio ddynol | ![]() |
| System dreulio ddynol | ![]() |
| Filysau | ![]() |
| Filysau | ![]() |
| Oesoffagws | ![]() |
| Llyncu | ![]() |
| Stumog | ![]() |
| Model o’r coluddyn bach | ![]() |
| Coluddyn | ![]() |
| Dyraniad thoracs | ![]() |
| Ysgerbwd | ![]() |
| Model o fraich | ![]() |
| Cyhyryn braich gwrthweithiol | |
| Diet cytbwys | ![]() |
| Ensymau | ![]() |
| Calon | ![]() |
| Siambrau’r galon | ![]() |