NUR 148 Test 1
- What are monozygotic twins?
Answer One fertilized ovum splits into two; genetically identical; aka identical twins
- What are dizygotic twins?
Answer Two ova fertilized by separate sperm; can be same or different sex; aka fraternal twins
- What are the functions of the placenta?
Answer -act as endocrine gland
Answer produces hCG, hCS, progesterone, and estrogen
-gives fetus oxygen and removes CO2 -synthesis of glycogen, cholesterol, and fatty acids -provides fetus with nutrients and removes waste products
- What are the functions of amniotic fluid?
Answer -maintain constant fetal body temp
-oral fluid -collects some waste -cushions fetus from blunt trauma -allows freedom of movement so muscles and skeletal system can develop -essential for lung development -prevents compression on umbilical cord -prevents membranes from sticking to fetus
- What are the three fetal shunts and their functions? 1 / 2
Answer -ductus venosus
shunts blood past the liver into the vena cava
-foramen ovale
allows some oxygenated blood fr right atrium to bypass lungs
-ductus arteriosus
allows some oxygenated blood from right ventricle to bypass lungs
- What is the purpose of Wharton's jelly?
Answer Protects blood vessels of cord from compression which may interfere with fetal circulation
- What are the characteristics of the umbilical cord?
Answer -two arteries (blue)
-one vein (red)
- What are the signs and symptoms of neonatal abstinence syndrome (NAS)?
Answer -excessive and/or high pitched crying
-hyperactive reflexes -increased muscle tone -irritability -poor feeding -vomiting, diarrhea -seizures
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