What is the Difference Between Seminal Vesicle and Prostate Gland?

The seminal vesicle and prostate gland are both accessory glands in the male reproductive system, but they have distinct structures and functions.

Seminal Vesicle:

• Paired glands located posterior to the urinary bladder.
• Each gland has a short duct that joins with the ductus deferens at the ampulla to form an ejaculatory duct that empties into the urethra.
• The fluid from the seminal vesicles is viscous and contains fructose, prostaglandins, and proteins.
• Fructose provides an energy source for sperm, prostaglandins contribute to sperm mobility and viability, and proteins cause slight coagulation reactions in the semen after ejaculation.

Prostate Gland:

• A firm, dense structure located just inferior to the urinary bladder, about the size of a walnut.
• Encircles the urethra as it leaves the urinary bladder.
• Comprised of tubuloacinar glands lined by a simple or pseudostratified columnar epithelium surrounded by a fibromuscular stroma.
• Secretes a fluid containing enzymes, glycoproteins, and prostaglandins that is added to the semen during ejaculation.
• The secretions of the prostate are thin and provide some lubrication for the tip of the penis during intercourse.

In summary, the seminal vesicles are sac-like structures that produce a viscous fluid, while the prostate gland is a walnut-sized structure that produces a thin, lubricating fluid. Both glands contribute to the formation of semen, but their specific functions and compositions differ.

Comparative Table: Seminal Vesicle vs Prostate Gland

The seminal vesicle and prostate gland are both part of the male reproductive system and play important roles in producing and transporting semen. Here is a table highlighting the differences between the two:

Both the seminal vesicle and prostate gland produce fluids that make up the male semen, and these fluids protect the sperm.