RADIOLOGICAL OBSERVATIONS ON ELECTRICALLY-INDUCED EJACULATION IN THE RAM

in Reproduction

Summary.

Observations on the urogenital tract were made radiologically in six rams. Contrast medium was first introduced to the urethra or vas deferens before electrical stimulation was applied per rectum and later to the vas during a series of stimuli to induce ejaculation.

Without stimulation, contrast medium reaching the pelvic urethra from either the penile urethra or the ampulla was generally expelled in a retrograde manner to the bladder, while residual material in the penile urethra was voided.

Ejaculation took place only during pauses between stimuli, fluid being discharged from the ampulla straight through into the penile urethra. This main discharge was followed by some reflux of fluid from the pelvic urethra to the bladder. At rest, no fluid remained in either the pelvic or the penile urethra.

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