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Archive for the ‘contractions’ Category

Pound for pound, the uterus is the strongest muscle in the human body. The uterus weighs about 40 ounces (2.5 pounds; 1.1 kg) and is about the size of a pear when not pregnant. Yet, in the process of giving birth, the uterus can exert over 100 pounds of force (440 newtons). The uterus is […]

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