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Antepartum:

Contraception, conception, and fetal development

QuestionAnswer
What is contraception? prevention of conception
What is conception? union of sperm and egg
What is infertility? lack of conception despite unprotected sex for <12 mo.
What are common factors in infertility? decreased sperm production, ovulation disorders, tubal occlusions, endometriosis
BRAIDED is acronym for informed consent with contraception. The letter stands for? B: benefits, R: risks, A: alternatives, I: inquiries, D: decisions, E: explanations, D: documentation
When does gestation begins? begins with conception and throughout pregnancy
When does implantation of zygote in uterus occur? 6-10 days after conception
What is chorionic villi? fingerlike projections that develop out of the developing placenta.
What is the embryo stage? - day 15 to 18 weeks - all organs and external features are developed during this stage
What are the 3 layers of the embryo? 1. endoderm 2. mesoderm 3. ectoderm
What does the endoderm give rise to? gives rise to the internal organs, i.e. intestines, and epithelium of resp tract
What does the mesoderm give rise to? gives rise to connective tissue, bone marrow, muscles, blood, lymph tissue, bones and teeth
What does the ectoderm gives rise to? gives rise to skin, nails, hair, glands, CNS and PNS
What is the fetal stage? When fetus becomes recognizable as human, from 9 weeks to completion of pregnancy
What is viability? 20 wk gestation or weight of 500+ grams
When are all body organs formed in embryo? 8 wk
When can the sex of the fetus be determined? 12 wk
What is vernix caseosa? protective, cheese-like coating on skin of fetus formed around 20 wk
What is lecithin? a respiratory marker
What is ductus arteriosus? connects pulmonary artery with aorta allowing blood to bypass the lungs
What is foramen ovale? an intra-atrial opening that shunts blood from the rt to the left atria of the heart
What is ductus venosus? shunts blood from umbilical vein to inferior vena cava allowing most of the blood to bypass the liver
What functions does the placenta perform? performs metabolic functions of respiration, nutrition, excretion, and storage.
What is the function of the amniotic fluid? maintains constant body temp of fetus, cushions, allows fetal movement for musculoskeletal development, prevents umbilical cord compression
When is fetal movement felt? usually around wk 20
What are some examples of terotogenic factors? radiation, alzcohol, tobacco, drugs, viruses or bacteria
How many vessels are in an umbilical cord? 2 arteries: carry de-O3 and waste away from fetus 1 vein: carry O2 to fetus
What is Wharton's jelly? white substance around cord that protects vessels from pressure and torsion
What are different contraceptive methods? surgical, barrier, hormonal, and IUD
Created by: odbal24
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