Which structure aids sperm motility by providing energy?

The seminal vesicle is crucial for providing energy to sperm motility. It produces a viscous fluid rich in fructose, which serves as an energy source for sperm. This energy is essential for sperm to swim through the female reproductive tract and reach the egg for fertilization.

The fluid produced by the seminal vesicles also contains other substances that help enhance sperm motility and overall function. This support is vital for the sperm to navigate through the various environments they encounter post-ejaculation.

In contrast, the prostate gland mainly contributes to the composition of semen with its own fluid, which helps to nourish sperm and contribute to neutralizing the acidity of the female vagina, but does not provide a primary energy source. The epididymis is mainly responsible for the maturation and storage of sperm, while the testis is where sperm is produced but does not directly provide energy for motility.