The intramural part (located within the wall of urinary bladder) of the porcine ureter from 100 (50 male and 50 female) six months old Bulgarian White x Landrace pigs, with weight between 95 and 105 kg, slaughtered for meat consumption in accordance with Bulgarian legislation, were studied after silicone filling, radiography and corrosion casts. It was established that the intramural part showed a well expressed curved course (almost 90áµ’) with laterally oriented arch and distension just before transforming into ureteral columns. The statistical data (presented as mean ± SD) of the studied morphometric parameters on silicone replicas - diameter and length of both sides of this part of the ureter and the distance between the two ureteral orifices (ostia ureterica), as well, showed slightly higher values in females compared to males, with no statistical significance (P>0.05, one-way ANOVA). Similarly, the diameter and length of the right ureters were with slightly higher values that these of the left intramural parts. Also, an asymmetry between ureteral ostia was observed - 15.4% in males and 38.5% in females, with different position toward each other. Ureteral ectopy was not observed in all animals studied. The original data obtained present a species-specific feature and could be useful also in medico-biological studies related to humans and probably in xenotransplantation, as well.
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