What structure do the Wolffian ducts develop into in male genitalia formation?

The Wolffian ducts, also known as the mesonephric ducts, play a crucial role in the development of male genitalia. In the presence of male sex hormones such as testosterone, which are secreted by the developing testes, the Wolffian ducts undergo significant differentiation and develop into several key structures in the male reproductive system. Specifically, they give rise to the epididymes, vas deferens, seminal vesicles, and ejaculatory ducts.

The epididymis serves as a storage site for sperm and is essential for sperm maturation. The vas deferens is the duct through which sperm travels to exit the body during ejaculation. The seminal vesicles contribute to the seminal fluid, which nourishes the sperm and facilitates its transport. The ejaculatory ducts are formed by the union of the vas deferens and the ducts from the seminal vesicles, allowing for the passage of sperm and seminal fluid into the urethra.

The other structures mentioned are not derived from the Wolffian ducts. The testes develop from the gonadal ridge and are not formed from the ducts directly. The Müllerian ducts are structures that lead to the development of female reproductive organs and regress under the influence of testosterone in males. The urogenital sinus