A | B | C | D | |
1. | Bidder's canal | Adrenal gland | Urinogenital duct | Rectum |
2. | Bidder's canal | Adrenal gland | Urinogenital duct | Cloaca |
3. | Vasa efferentia | Adrenal gland | Urinogenital duct | Cloaca |
4. | Vasa efferentia | Thyroid gland | Urinogenital duct | Cloaca |