KIN 210 Study Guide - Midterm Guide: Intrauterine Growth Restriction, Preterm Birth, Gestational Diabetes
26 Sep 2017
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Uterus size : dramatic growth b/w 2nd and 3rd trimesters. Corpus luteum degenerates b. w 12 to 17 weeks from lmp. Inhibition of uterine contractions (drop in progesterone during late gestation allowing uterine contractions to increase) Hcg stimulates testosterone production in male fetal gonads. Relaxin increases elasticity in joints and ligaments in pelvis. 2nd and 3rd trimesters of pregnancy = dramatic changes in maternal anatomy and physiology. Apetite increases = only necessary to consume 300 calories additionally per day. Maternal weight gain; resulting from the enlarged uterus, amniotic fluid, and placenta. Additional breast tissue and dramatically increased blood volume. Fat storage accounts for only approximately 2. 3 kg in a normal pregnancy and serves as a reserve for the increased metabolic demand of breastfeeding. 1st trimester - mother does not need to consume additional calories. 1st trimester : nausea and vomiting triggered by an increased sensitivity to odors, the increased circulation of pregnancy-related hormones and decreased intestinal peristalsis.
