Cervix with Mucous Plug
Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.
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The cervix with a mucous plug prevents breakage of the amniotic sac or leakage of the vital amniotic fluid. The cervix is the lower one-third of the uterus; during pregnancy, a thick mucous plug seals the cervical orifice (the opening to the uterus).
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