Porth's Essentials of Pathophysiology, 4e

Physiologic Basis of Male Reproductive Function Testicular Function Hormone Production Spermatogenesis Semen Production Hypothalamic/Pituitary Control of Testicular Function Sexual Function Neural Control of Male Sexual Function Erectile Dysfunction Disorders of the Penis, the Scrotum and Testes, and the Prostate Disorders of the Penis Inflammation and Infection Peyronie Disease Priapism Neoplasms of the Penis Disorders of the Scrotum and Testes Disorders of the Testicular Tunica Testicular Torsion Epididymitis Orchitis Neoplasms of the Scrotum and Testes Disorders of the Prostate Prostatitis Benign Prostatic Hyperplasia Cancer of the Prostate Disorders in Childhood and Aging Disorders of Childhood 11 U N I T

Genitourinary and Reproductive Function

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C h a p t e r

Disorders of the Male Genitourinary System

T

he male genitourinary system is subject to a num- ber of structural and functional disorders, all of which can affect urine elimination, sexual function, and fertility. This chapter is divided into three parts: (1) the physiologic basis of male reproductive function, including hormone production, spermatogenesis, and neural control of sexual function; (2) disorders of the male genitourinary structures, including the penis, scro- tum and testes, and prostate gland; and (3) disorders of childhood and changes that occur as a result of the aging process.

Hypospadias and Epispadias Phimosis and Paraphimosis Cryptorchidism

Physiologic Basis of Male Reproductive Function

Changes Related to Aging

The male genitourinary system is composed of the paired gonads, or testes; genital ducts; accessory geni- tal organs; and penis (Fig. 39-1). The testes function in the production of androgens or male sex hormones and spermatozoa; the ductile system aids in the storage and transport of spermatozoa; and the accessory geni- tal organs produce the fluid constituents of semen. The penis functions in both urine elimination and sexual function.

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