A prostate-specific antigen(PSA) level is drawn from a 53-year-old as part of a routine health evaluation. Which of the following embryonic structures gives rise to the organ being screened for carcinoma?
(A)genital tubercle
(B)Processus vaginalis
(C)Testis cords
(D)Tunica albuginea
(E)Urogenital sinus
Answer: E: Urogenital sinus