PSY 228 Lecture Notes - Lecture 11: Amniotic Sac, Gynecomastia, Umbilical Cord
Document Summary
Edema (water retention) in face, hands, ankles and feet. Uterus becomes hard and large, putting pressure on other organs. Fetus becomes more active (hiccups and somersaults) There may be discharge of blood from the mucus plug that was at cervix. In 10% of women, membranes containing amniotic fluid rupture. Most women will not rupture amniotic sac until the end of the 1st stage of labor. First stage of labor (divided into early, late, and transition) Contractions produce effacement (thinning out ) and dilation (opening) In early first stage labor contractions are spaced far apart (15 to 20 minutes) lasting about 45 seconds to a minute. Late first stage labor causes increased contractions, closer together and further dilation of cervix (5- Transition = cervix becomes fully dilated, contractions are strongest. First stage labor averages 12-15 hours for 1st pregnancy and 8 hours for later pregnancies. Baby"s head or other body part moves into vagina.
