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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: Indian Rhino

Original text on this topic:
Two male reproductive organs were examined. The junction of the bladder and urethra is located on the caudal pelvic brim. All of the accessory sex glands are in close proximity at the neck of the bladder and ventral to the rectum, approximately 5.0 cm cranial to the anal spincter. The paired dense hyperechogenic bulbourethral glands are dorsolateral to the urethra and just cranial to the anus. On vertical cross-sectioning ultrasound, they appeared round and were 1.8 cm and 2.5 cm in diameter. The irregular prostate surrounds the neck of the bladder and lies between and slightly cranial to the bulbourethral glands. The prostate is lobulated. The lobes stack together extending bilaterally from the urethra. The lobes may extend from the surface or may be cystic and filled with prostatic fluid. Its irregularity and uneven border makes it difficult to distinguish with ultrasound.

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