What happens, biologically speaking, to a woman when she orgasms?

And what exactly is a woman's orgasm consist of?What happens, biologically speaking, to a woman when she orgasms?
elevated brain acticity with the release of the hormone oxcytocin,(not the drug oxycontin) and a minute amount of the hormone prolactin, overall a stimulation of the right side of the brain
to simplyfy the above question
the brain rewards the body with feeling for somereason when you orgasm
sorry the answer isnt too complete. i learned it in sex ed and forgot a little
produces oxytocin which makes orgasm.
Orgasm is the conclusion of the plateau phase of the sexual response cycle, and is experienced by both males and females. 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 vocalizations and muscular spasms in other areas of the body, and a generally euphoric sensation.