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Antepartum:
Contraception, conception, and fetal development
| Question | Answer |
|---|---|
| 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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