... is composed of nearly all the third sacral and branches from the second and fourth sacral. As one examines this nerve he is forced to the conclusion that it is an enormous supply for a small organ. The periphery of the pudic nerve spreads itself like a fan over the genitals." The lesser sciatic nerve supplies only one muscle—the gluteus maximus—and then sends the large pudendal branch to the side of the penis, and hence the friction of coitus induces active contraction of the gluteus maximus, "the main muscle of coition." The large pudic and the pudendal constitute the main supply ... — Studies in the Psychology of Sex, Volume 5 (of 6) • Havelock Ellis
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