<prompt> Augmented retraction ring in labour is known asShroders ringBandls ringHour glass uterusNormal ring  <response>: Ans. b Bandls ring. Ref. Williams, Obstetris 21stpg.836, Dutta, Obstetrics 4thpg.367BANDLS PATHOLOGICAL RETRACTION RING A circular groove encircling the uterus, formed between active upper segment and distended lower segment.SCHROEDERS CONSTRICTION RING Situated at the junction of upper and lower segment. Usually reversible and complete. May appear in all stages of labour. Ring is not felt per abdomen, round ligament also not felt. 