Labels:frisbee | poster | sky | subarachnoid space OCR: uerus Umbuical cord Placento Cervical Opening The embryo usually attaches itself in the upper par! of the vierine wall but sometimes implantation takes piace tower location. As the placenta grous it can partially or completely cover the onening the uterus causing abnormat beeding the secona or third trimester. Uteras embruo itseif uterine touer
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