Seminal vesicles

Definition

Seminal vesicles are paired glands located behind the bladder that secrete fluid rich in fructose, which constitutes a major component of semen. This fluid provides energy for sperm motility and aids in their transport.

5 Must Know Facts For Your Next Test

1. Seminal vesicles contribute approximately 60-70% of the seminal fluid volume.
2. The secretion includes fructose, prostaglandins, and proteins that support sperm viability.
3. Infections or inflammation of the seminal vesicles can contribute to male infertility.
4. The seminal vesicle fluid helps neutralize the acidic environment of the vaginal tract.
5. Seminal vesicles work closely with the prostate gland to produce and ejaculate semen.

Review Questions

• What percentage of seminal fluid is contributed by the seminal vesicles?
• What are three key components found in the fluid secreted by the seminal vesicles?
• How do infections in the seminal vesicles affect male fertility?

Related terms

Prostate Gland: A gland located below the bladder that produces a component of semen.

Ejaculatory Ducts: Ducts formed by the union of the vas deferens and seminal vesicle ducts; they pass through the prostate to empty into the urethra.

Fructose: A sugar found in seminal fluid that provides energy for sperm motility.