| structuur van musculus sphincter ani internus (lichaamsstructuur) |
| structuur van musculus sphincter ani internus |
| musculus sphincter ani internus
|
| interne sfincter |
 | De binnenste sluitspier van de anus (het poepgat). |
| Structure of internal anal sphincter muscle |
| Sphincter ani internus muscle structure
Internal sphincter ani muscle
Circular layer of muscularis propria of anal canal
Sphincter ani internus muscle
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