From which glands is fluid secreted to aid sperm transport?

The seminal vesicles are responsible for secreting a significant portion of the fluid that contributes to semen, which plays a crucial role in sperm transport. These glands produce a viscous, alkaline secretion that contains fructose, which provides energy for sperm motility, as well as other substances that help to nourish and protect sperm as they travel through the male reproductive tract and into the female reproductive system during ejaculation.

While the prostate gland and bulbourethral glands also contribute to the fluid component of semen, the seminal vesicles provide the largest volume of fluid, making them instrumental in facilitating effective sperm transport. The testes primarily produce sperm and hormones, but they do not secrete fluids that aid in transport. Therefore, the seminal vesicles are considered the primary glands involved in secreting fluid specifically for the purpose of aiding sperm transport.