Erection and sensation of the penis is in what dermatomes?

Answer Posted / henry

An erection can be stimulated by the ankle and other parts
of the feet. Also all along the crack in the butt. The
nerve endings there are very sensual in nature. S2 S3 S4
as well as S4 are involved here. The penis is most
affected by S3 and S4. The S dermatomes interact with each
other thus many can be involved.

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