What is the function of the vas deferens?

The function of the vas deferens is to conduct sperm from the testicle to the urethra. This muscular tube plays a crucial role in the male reproductive system by transporting mature sperm, which are stored in the epididymis, during ejaculation. When an ejaculation occurs, sperm travel through the vas deferens and mix with seminal fluid from other glands before reaching the urethra, from where it is expelled from the body.

The other options relate to different functions within the male reproductive system. For instance, temperature regulation of the testes is primarily managed by the scrotum and the cremaster muscle, which helps keep the testes at an optimal temperature for sperm production. Seminal fluid is produced mainly by the seminal vesicles and prostate gland, not the vas deferens. While the vas deferens does transport sperm, it does not serve as a primary storage site; sperm are stored in the epididymis before being transported.