Vaginal erotic sensitivity by sexual examination.
During coitus, the partners orient their hips to allow the penis to move back and forth in the vagina to cause friction, typically without fully removing the penis. Even a genius like Leonardo da Vinci distorted men's and women's bodies—as seen now—to fit the ideology of his time and to the notions of his colleagues, who he paid tribute to. During vaginal sex also known as penetrative vaginal sex, vaginal intercourse, sexual intercourse and just sex the penis goes into the vagina. To find out whether taking images of the male and female genitals during coitus is feasible and to find out whether former and current ideas about the anatomy during sexual intercourse and during female sexual arousal are based on assumptions or on facts. Obstacles that those with disabilities face with regard to engaging in sexual intercourse include pain, depressionfatigue, negative body imagestiffness, functional impairment, anxiety, reduced libidohormonal imbalance, and drug treatment or side effects. The position is considered by some to be less intimate because eye contact and kissing are more difficult. A Dictionary of Biology.