The Male Reproductive System – Boundless Anatomy and Physiology
Anatomy and physiology of the male reproductive system
Editing Male Pelvic Anatomy - Physiopedia
Reproduction – Anatomy and Physiology
Female and male superficial perineal muscles (from Wikipedia/Perineum).
Corpus spongiosum (penis) - Wikipedia
Penis: 2.1 Embryology and Penile Development, PDF, Genitourinary System