Textbook descriptions of male and female sexual behavior in animals define distinct circuits: females have a brain-to-body circuit controlling lordosis (arching of the lower back and receptivity to mate), while males have a brain-to-spinal cord-to-body circuit involving arousal, erection, mounting, insertion, and ejaculation.

“So um you know the textbook version of male versus female sexual behavior has been a story about females having a circuit that goes from brain to body to control this thing they call lordosis the arching of the lower back the receptivity the willingness to mate and the males having a circuit that goes from brain to spinal cord to body um involving uh arousal erection mount counting, um, insertion, ejaculation.”