Pudendal nerve

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The pudendal nerve runs along the internal pudendal artery to supply the innervation of the external genitalia. To do so, the pudendal nerve passes through the pelvis, through the greater sciatic notch, where it then divides into two terminal branches. The perineal nerve is the lower part and the upper branch is characterized by the dorsal nerve of the clitoris in the female or the dorsal nerve of the penis in men. Its nerve fibers originate from the second, third, and fourth sacral roots.