Structure of Male Reproductive Organs The male reproductive system is designed to produce, maintain, and transport sperm and semen, as well as to produce male sex hormones. It consists of external organs and internal organs, each with specific functions. 1. External Male Reproductive Organs a. Penis b. Scrotum 2. Internal Male Reproductive Organs a. Testes (Testicles) b. Epididymis c. Vas Deferens (Ductus Deferens) d. Ejaculatory Ducts e. Urethra 3. Accessory