Final answer:
During the orgasm phase in the sexual response cycle, women experience rhythmic contractions of pelvic and vaginal muscles which release tension and produce pleasurable sensations. This phase is critical for the climax of sexual activity and is followed by the resolution phase where the body returns to its normal state.
Step-by-step explanation:
In women, during the orgasm phase of the sexual response cycle, the pelvic and vaginal muscles contract rhythmically, releasing muscular tension and producing pleasurable sensations.
These contractions are involuntary and occur in both sexes, although they manifest differently. In men, there is also a contractual process that results in ejaculation, whereas in women, it involves the uterus and vaginal muscles contracting in waves.
The orgasm is the peak phase of the sexual response cycle and is associated with this rhythmic muscle activity. Following orgasm, both men and women enter the resolution phase, where the body returns to its normal state.
It's important to note that men experience a refractory period after orgasm during which they cannot maintain an erection or ejaculate again for some time.