The organs of the male reproductive system include the external genital organs - the penis and scrotum, and the internal genital organs - the prostate gland, bulbourethral glands, seminal vesicles, deferent ducts, testes and their adnexa. The main purpose of the male sexual system is to realize the reproductive function of the male body. In addition, the testicles and prostate gland, being hormone-regulated organs and participating in the synthesis and metabolism of reproductive hormones, perform the endocrine function. The penis participates in the function of the urinary system.