NR 203 Midterm Exam with Accurate Answers.
Latest Edition
What is pregnancy? - ✔✔Pregnancy is a state of health, not an illness. It is natural and
physiological
What is preimplantation genetic testing? - ✔✔genetic profiling of embryo prior to implantation
What are some screenings that will happen in the first trimester? - ✔✔- blood work
-ultrasound for nuchal translucency
What is amniocentesis? - ✔✔the sampling of amniotic fluid using a hollow needle inserted into
the uterus, to screen for developmental abnormalities in a fetus.
What is chronic villus sampling? - ✔✔Sampling cells from the placenta
What week/day of pregnancy is considered the embryonic stage? - ✔✔15 days or 8 weeks
gestation
Why is 8 weeks gestation a big day for the fetus? - ✔✔all organs and systems are present in the
fetus
What are the three primary germ layers? - ✔✔ectoderm, mesoderm, endoderm
What does the ectoderm form? - ✔✔Skin, nails, hair, nervous system,
What does the mesoderm form? - ✔✔bones, teeth, muscles, dermis/connective tissue,
cardiovascular system
, What does the endoderm form? - ✔✔respiratory and GI tracts, liver, pancreas, urethra, vagina
What are functions of the amniotic fluids? - ✔✔-maintaining a constant body temp for baby
- Prevents embryo from tangling w/ membranes- facilitates symmetrical growth
-Acting as a barrier to infection
-Allowing freedom of movement for musculoskeletal development
-acting as a cushion protecting fetus and umbilical cord from trauma
-Serving as a source of oral fluid and as a repository for waste
-Enhancing fetal lung development
When does the yolk sac form? - ✔✔8-9 days after conception
What is whartons jelly? - ✔✔covers cord to prevent compression of blood vessels, and ensures
blood flow
What is the umbilical cord made up of? - ✔✔2 arteries and 1 vein
When is the placenta created? - ✔✔it is formed at implantation
Why is day 17 in gestation a big day? - ✔✔maternal-placental-embryonic circulation is in place
and the embryonic heart starts beating
What are the functions of the placenta? - ✔✔metabolic exchange and hormone production
What are the 4 placental hormones? - ✔✔1. Estrogen
2. Progesterone
Latest Edition
What is pregnancy? - ✔✔Pregnancy is a state of health, not an illness. It is natural and
physiological
What is preimplantation genetic testing? - ✔✔genetic profiling of embryo prior to implantation
What are some screenings that will happen in the first trimester? - ✔✔- blood work
-ultrasound for nuchal translucency
What is amniocentesis? - ✔✔the sampling of amniotic fluid using a hollow needle inserted into
the uterus, to screen for developmental abnormalities in a fetus.
What is chronic villus sampling? - ✔✔Sampling cells from the placenta
What week/day of pregnancy is considered the embryonic stage? - ✔✔15 days or 8 weeks
gestation
Why is 8 weeks gestation a big day for the fetus? - ✔✔all organs and systems are present in the
fetus
What are the three primary germ layers? - ✔✔ectoderm, mesoderm, endoderm
What does the ectoderm form? - ✔✔Skin, nails, hair, nervous system,
What does the mesoderm form? - ✔✔bones, teeth, muscles, dermis/connective tissue,
cardiovascular system
, What does the endoderm form? - ✔✔respiratory and GI tracts, liver, pancreas, urethra, vagina
What are functions of the amniotic fluids? - ✔✔-maintaining a constant body temp for baby
- Prevents embryo from tangling w/ membranes- facilitates symmetrical growth
-Acting as a barrier to infection
-Allowing freedom of movement for musculoskeletal development
-acting as a cushion protecting fetus and umbilical cord from trauma
-Serving as a source of oral fluid and as a repository for waste
-Enhancing fetal lung development
When does the yolk sac form? - ✔✔8-9 days after conception
What is whartons jelly? - ✔✔covers cord to prevent compression of blood vessels, and ensures
blood flow
What is the umbilical cord made up of? - ✔✔2 arteries and 1 vein
When is the placenta created? - ✔✔it is formed at implantation
Why is day 17 in gestation a big day? - ✔✔maternal-placental-embryonic circulation is in place
and the embryonic heart starts beating
What are the functions of the placenta? - ✔✔metabolic exchange and hormone production
What are the 4 placental hormones? - ✔✔1. Estrogen
2. Progesterone
