During ejaculation, the prostate squeezes this fluid into the urethra, and it's expelled with sperm as semen. The vasa deferentia (singular: vas deferens) bring sperm from the testes to the seminal vesicles. The seminal vesicles contribute fluid to semen during ejaculation.
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Answer:
During ejaculation, the prostate squeezes this fluid into the urethra, and it's expelled with sperm as semen. The vasa deferentia (singular: vas deferens) bring sperm from the testes to the seminal vesicles. The seminal vesicles contribute fluid to semen during ejaculation.