The Contraction (childbirth) reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Contraction (childbirth)

In medicine (obstetrics), a contraction is a forceful motion of the uterus, generated by the release of oxytocin ("quick labor") by the pituitary gland, culminating in childbirth.

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