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Definition of Uterus, contraction of the

Uterus, contraction of the: The tightening and shortening of the uterine muscles.

During labor, contractions accomplish two things: (1) they cause the cervix to thin and dilate (open); and (2) they help the baby to descend into the birth canal.

Uterine contractions also occur during the monthly menstrual cycle and are recognized as menstrual cramps.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=9924
Last Editorial Review: 6/14/2012

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