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Sexual Response


Sexual Response: Second Phase

Also known as the plateau, this phase is characterized primarily by the intensification of all of the changes begun during the excitement phase. During this period, the woman's clitoris may become so sensitive that it is painful to the touch. The plateau phase extends to the brink of orgasm, which initiates the reversal of all of the changes begun during the excitement phase.

During the second phase, called the expulsion phase, the urinary bladder closes to block the possibility of urine mixing with the semen. At this point, muscles at the base of the penis begin a steady rhythmic contraction that finally expels the semen from the urethral opening at the head of the penis.


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