In addition to the testes, several accessory glands contribute to erotic the formation of semen. These include the seminal vesicles, prostate gland, and bulbourethral glands. Each gland produces secretions that support sperm survival and function.
The seminal vesicles provide the majority of the fluid component of semen. Their secretions contain fructose and proteins that nourish sperm cells.
The prostate gland contributes enzymes, minerals, and proteins that help maintain semen fluidity. One of these enzymes, prostate-specific antigen, facilitates the liquefaction of semen following ejaculation.
The bulbourethral glands secrete a clear fluid prior to ejaculation. This secretion lubricates the urethra and neutralizes residual acidity from urine.
The coordinated activity of these glands ensures that sperm are delivered in an environment conducive to fertilization.
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