What do seminal vesicles secrete to aid sperm movement?

The seminal vesicles are glands that play a key role in male reproductive physiology. They produce and secrete a fluid that is rich in sugar, specifically fructose. This sugar-rich secretion serves as an important energy source for sperm, enabling them to swim and function effectively as they travel through the male reproductive tract and into the female reproductive system.

Fructose provides the necessary energy that supports sperm motility, which is essential for their journey toward the egg. The secretion from the seminal vesicles contributes to the overall volume of semen, facilitating the delivery of sperm. The combination of frutose with other components in the seminal fluid helps to create an optimal environment for sperm survival and function, promoting successful fertilization.

The other options, while they play roles in reproductive health or other physiological functions, do not specifically pertain to what seminal vesicles secrete to assist in sperm movement. For instance, protein-rich fluid may be part of other secretions in the reproductive system, sodium bicarbonate serves to neutralize acidity in the female reproductive tract, and hormones, though essential for various bodily functions, are not secreted by the seminal vesicles for the purpose of aiding sperm movement. Therefore, the correct answer highlights the specific contribution of the seminal vesicles in