An orgasm (sexual climax) is the conclusion of the
plateau phase of the
sexual response cycle, and is experienced by both males and females. Orgasm is characterized by intense physical pleasure, controlled by the involuntary, or autonomic, nervous system. It is accompanied by quick cycles of
muscle contraction in the lower
pelvic muscles, which surround the primary
sexual organs and the
anus. Orgasms are often associated with other involuntary actions, including muscular
spasms in other areas of the body, a general
euphoric sensation, and, less frequently,
vocalizations.
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