Orgasmic platform

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The orgasmic platform are the tissues of the outer third of the vagina, labeled by Masters and Johnson. The name is quite a misnomer, considering most women do not reach orgasm through vaginal stimulation.^{[citation needed]} They swell considerably, and the pubococcygeus muscle tightens, reducing the diameter of the opening of the vagina. During orgasm, women experience rhythmic contractions of the orgasmic platform.