What is the role of the seminal vesicles and the prostate gland?

The seminal vesicle and the prostate glands add their secretions so that the sperm are in a fluid which makes their transport easier and this fluid also provides nutrition.

Glands in the male reproductive system

Male reproductive system includes three glands, namely seminal vesicles, prostate gland, and Cowper’s gland. The secretions from the three glands mix to form a fluid called semen. Semen nourishes the sperm, increases the volume and helps in lubrication. Let us know more about Seminal Vesicles and Prostate glands.

Seminal Vesicles

The seminal vesicle is the accessory gland in human males whose secretion activates the sperms.

  • It is also called the uterus masculine.
  • There is only one pair of Seminal vesicles in man.
  • It consists of fructose, ascorbic acid, prostaglandin and enzymes.
  • The fructose functions by providing energy.
  • The secretions of the seminal vesicles are alkaline, slimy and its pH is about 7.4.

Prostate gland

A bilobed structure which surrounds the urethra close to its origin from the bladder. It pours an alkaline secretion into the semen as it passes through the urethra.

  • It is situated around the anterior end of the urethra.
  • The prostate gland secretes a white fluid, which forms 25 to 30 per cent of semen.
  • The fluid contains Phosphate, lysozymes, spermin, citrate, fibrinolysin, etc.
  • Its secretions activate the sperms and prevent the semen from coagulating.
  • In aged men, the size of the prostate may be enlarged which creates a problem during urine discharge.
  • The prostate gland consists of four main lobes: 1 – Ventral lobe, 1 – Dorsal lobe and 2- lateral lobes.

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