HLTH 210 Midterm: Module 2- Labor and Materinty

• School: University of Waterloo
• Department: Health Studies
• Course: HLTH 210
• Professor: David- Antoine Williams

Document Summary

Module 2: prenatal and early postnatal growth and development. Adjustments of the infant at birth and postnatal changes. Low birth weight and barker (and other related) hypotheses. Uterine size: full-term, 38. 5 weeks from conception, 40. 5 weeks since lmp, three trimesters, ~13 weeks each, uterus size, fist pre-pregnancy, dramatic growth in 2nd and 3rd trimesters. Hormones during pregnancy: main ones: estrogens, progesterone, and hcg, corpus luteum degenerates btw 12-17 weeks (from. Lmp): placenta takes over as endocrine organ, converts weak androgens secreted by maternal and fetal adrenal glands to estrogens ovulation prevention fetal tissue growth, maturation of lungs and liver. Digestive and urinary: 1st trimester: morning sickness decreased intestinal peristalsis pregnancy-related hormones, mid-pregnancy kidneys become highly efficient process fetal and maternal wastes high urine production, 3rd trimester. Circulatory gastric reflux: upward constriction of growing uterus on stomach frequent urination: downward pressing on bladder to: 30% increase in blood volume, moderate rise in pulse, moderate rise in blood pressure.