During pregnancy and delivery, a hormone called relaxin is secreted to "relax" (soften) the pelvic ligaments and cervix. What pelvic girdle region would be a good target for this hormone to help open up the anterior pelvis during the birthing process?
1) pubis
2) ischium
3) ilium
4) sacrum

The pelvic girdle is made up of two hipbones, sacrum and coccyx. The hipbones also called coxal bones has three parts: ilium, ischium, and pubis. Pubis makes the anterior and inferior part of the hip bone. The joint between two pubes of hipbones is called pubic symphysis. Placenta of pregnant women produces more relaxin during later stages of pregnancy to facilitate childbirth. The hormone relaxin increases the flexibility of pubis symphysis to ease the delivery of the baby by dilation of the uterine cervix.

During pregnancy and delivery, a hormone called relaxin is secreted to "relax" (soften) the pelvic ligaments and cervix. What pelvic girdle region would be a good target for this hormone to help open up the anterior pelvis during the birthing process? 1) pubis 2) ischium 3) ilium 4) sacrum

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During pregnancy and delivery, a hormone called relaxin is secreted to "relax" (soften) the pelvic ligaments and cervix. What pelvic girdle region would be a good target for this hormone to help open up the anterior pelvis during the birthing process?
1) pubis
2) ischium
3) ilium
4) sacrum