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Seminal Vesicle

The seminal vesicles are a pair of convoluted tubular glands located behind the bladder in male mammals. They secrete a significant portion of the fluid that becomes semen. This fluid is rich in fructose (providing energy for sperm), prostaglandins, and proteins that help nourish and protect sperm. The seminal vesicle fluid combines with sperm from the testes and secretions from the prostate to form semen, which is expelled during ejaculation.

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Function

  • Secrete a viscous, alkaline fluid rich in fructose, prostaglandins, and proteins.
  • Fructose provides energy for sperm motility.
  • Prostaglandins may help stimulate contractions in the female reproductive tract.

Clinical Relevance

  • Inflammation (vesiculitis) or cysts can affect fertility.
  • Blockage can reduce semen volume and sperm motility.

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See also: Male Anatomy