Midsagittal image of the anatomy of sexual intercourse (experiment 12). P=penis, Ur=urethra, Pe=perineum, U=uterus, S=symphysis, B=bladder, I=intestine, L5=lumbar 5, Sc=scrotum
SchultzW W, van AndelP, SabelisI, MooyaartE.
Magnetic resonance imaging of male and female genitals during coitus and female sexual arousalBMJ 1999; 319 :1596 doi:10.1136/bmj.319.7225.1596