Plate 3-1 Open full size image SCROTAL WALL The testicles are maintained in position within the scrotal cavity by the structures of the spermatic cord. Each testicle and spermatic cord is invested in six distinct tissue layers that are acquired…
PELVIC STRUCTURES The relationships of male pelvic structures are illustrated in these complementary sagittal views—a paramedian and a median section. In the lower median view, the complete course of the urethra from the bladder to the meatus at the end…
Plate 1-1 Open full size image GENETICS AND BIOLOGY OF EARLY REPRODUCTIVE TRACT DEVELOPMENT Most living species have some form of sex-determination system that drives the development and expression of sexual characteristics in that organism. Sex determination can be genetic…