uterus• Uterus Normally pear-sized, the uterus grows up to five times its usual size in pregnancy.• Or Hecht could stay with the first and only method she has tried, having the doctorintroducesperm into her uterus.• But my uterus had gone into a kind of blue funk and did not respond.• About 30 years ago the estrogenreceptorprotein was first isolated from the ratuterus.• If implantation of a fertilizedegg does not occur, this lining breaks down and is expelled from the uterus.• Even so, Alison winced slightly, confirming their suspicion that the uterus was tender and contracted.• In this way the uterus is removed without touching any surfaces.• The uterus is very responsive to basstones.