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Schaffer, N.E.; Beehler, B.A., 1990. Preliminary studies on the anatomy and ultrasonic images of the reproductive structure of three species of rhinoceros (Rhinoceros unicornis, Diceros bicornis, Ceratotherium simum). Proceedings of the American Association of Zoo Veterinarians 1990: 242-248, 2 figures, 1 table

Location: World
Subject: Anatomy - Reproductive organs
Species: White Rhino

Original text on this topic:
The reproductive organs of male D. bicornis and C. simum are similar. The junction of the urethra with the urinary bladder is usually more cranial than the junction in R.unicornis. This results in a more developed pelvic urethra in the African rhinos. The prostate surrounds the neck of the bladder with two trapezoidal lobes joined by an isthmus. On vertical longitudinal cross-sectioning, the prostate appears as a hyperechogenic triangular structure with lines of hypoechogenic spaces that result from accumulated secretions in the parenchyma. The bilateral vesicular glands of all 3 species lie between the prostate and the neck of the bladder. They are cigar-shaped and extend cranially and slightly dorsally along either side of the bladder. These fluid-filled glands contain spherical anechoic alveolar pockets that are separated by echogenic septa.

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