PSYCH211 Chapter Notes - Chapter 4: Umbilical Cord, Water Birth, Teratology
6 Feb 2016
School
Department
Course
Professor
Document Summary
As pregnancy goes on, she releases (corticotrophin-releasing hormone) (crh) that is used for inducing pregnancy. Stage 1: dilation and effacement of the cervix. Dilation and effacement of the cervix: uterine contraction gradually becoming more frequent and powerful, they cause the cervix to open (dilate) and thin (efface) forming a clear channel from the uterus into the birth canal or vagina. As time goes on the contractions get faster and faster. Transition: frequency and strength of contractions are at their peak and the cervix opens completely. Mother must be relaxed or it will slow progress if labour. Mother has natural urge to squeeze and push with abdominal muscles and. Crowning: vaginal opening stretched around the entire head which then all forcing the baby down and out the baby comes out soon afterwards. Final few contractions pushes the placenta to separate from the wall of the uterus. Placenta is the nutrient sac that support the baby.
