<prompt> At how many weeks of gestation can Hegars sign be elicited?8 weeks10 weeks12 weeks15 weeks  <response>: Hegars sign refers to widening and softening of of the body or isthmus of the uterus. It usually occurs at 6-8 weeks of gestation. Softening and dilatation at the external os is caused by estrogen and progesterone. Chadwicks sign: It refers to bluish discoloration of cervix caused by congestion of pelvic vasculature. It is a presumptive sign of pregnancy. Jacquemiers sign: It refers to congested appearance of vaginal mucosa. Osianders sign: It refers to increased pulsations felt in the lateral fornices at 8 weeks of gestation. Goodells sign: It refers to softening of the cervix. Palmers sign: refers to intermittent contractions of the uterus. Ref: Bernstein H.B., VanBuren G. 2013. Chapter 6. Normal Pregnancy and Prenatal Care. In A.H. DeCherney, L. Nathan, N. Laufer, A.S. Roman Eds,CURRENT Diagnosis Treatment: Obstetrics Gynecology, 11e. Manual Of Obstretics, 3e By Daftary page 54 