Sexual differentiation in humans development can only occur when the fetal testis secretes key hormones at a critical period in early gestation. The testes begin to secrete three hormones that influence the male internal and external genitalia: they secrete anti-müllerian hormone (AMH), testosterone, and dihydrotestosterone (DHT). Anti-müllerian hormone causes the paramesonephric ducts to regress. Testosterone converts the mesonephric ducts into male accessory structures, including the epididymis, vas deferens, and seminal vesicle. Testosterone will also control the descending of the testes from the abdomen into the scrotum. Many other genes found on other autosomes, including"WT-1", "SOX9", "SF-1" also play a role in gonadal development. Females:
Causes of sexual violence do non-rapists. In one study, male rapists evaluated with penile plethysmography demonstrated more arousal to forced sex and less discrimination between forced and consensual sex than non-rapist control subjects, though both groups responded more strongly to consensual sex scenarios. Data on sexually violent individuals show that most direct their acts at individuals whom they already know. Drug-facilitated sexual assault (DFSA), also known as predator rape, is a sexual assault carried out after the victim has become incapacitated due to having consumed alcoholic beverages or other drugs. Alcohol has been shown to play a disinhibiting role in certain types of sexual