What is the Difference Between Bulbourethral Gland and Prostate Gland?

The bulbourethral gland and the prostate gland are both accessory sex glands in the male reproductive system. They produce fluids that are essential for the motility and overall health of sperm. However, there are some differences between these two glands:

Location and Size: The bulbourethral gland, also known as Cowper's gland, is a small, pea-sized structure located just below the urinary bladder. In contrast, the prostate gland is a walnut-sized structure located just below the bladder in front of the rectum.
Secretions: The bulbourethral gland secretes an alkaline mucus-like fluid, which neutralizes the acidity of urine residue in the urethra and helps to neutralize the acidity of the vagina. The prostate gland produces a weakly acidic secretion, which accounts for about 30% of the bulk of semen. It is made of a thin, milky fluid that contains citrate, enzymes, and prostate-specific antigen (PSA).
Function: The bulbourethral gland's secretions primarily serve to neutralize acidity, providing a more favorable environment for sperm. The prostate gland's secretions contribute to overall semen quality, including components like PSA, which helps to liquefy the ejaculate several minutes after release.
Percentage of Semen: Bulbourethral gland secretions account for about 10% of the total semen, while prostate gland secretions account for about 30% of the total semen fluid.

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Comparative Table: Bulbourethral Gland vs Prostate Gland

Here is a table comparing the differences between the bulbourethral gland (also known as Cowper's gland) and the prostate gland:

Feature	Bulbourethral Gland	Prostate Gland
Location	Located near the base of the penis, beneath the prostate gland	Located just inferior to the urinary bladder, encircling the urethra
Size	Pea-shaped, about 1 cm (0.4 inch) in diameter	Walnut-sized
Function	Secretes an alkaline mucus-like fluid that neutralizes the acidity of the urine residue in the urethra and helps to neutralize the acidity of the vagina	Secretes a thin, milky fluid that contains citrate, enzymes, and prostate-specific antigen (PSA), which contributes to semen production
Fluid Secretion	Fluid is clear and thick, acts as a lubricant, and may function as a flushing agent that washes out the urethra before the semen	Secretions are thin, milky, and alkaline, enhancing sperm motility

Both the bulbourethral gland and the prostate gland are part of the male reproductive system and contribute to the production of semen.

Guilherme Mazui

Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.