DeVry University obstetric Life Span Development Primary Germ Layers Questions
I’m studying for my Nursing class and don’t understand how to answer this. Can you help me study?
1. Which structure is commonly called the bag of waters (it breaks prior to delivery and often signals the onset of labor)?
Primary germ layers
Morula
Amniotic sac
Blastocyst
2. What term describes the ectoderm, mesoderm, and endoderm?
Inner cell mass
Extraembryonic membranes
Primary germ layers
Blastomeres
3. What is the outer extraembryonic membrane that forms finger-like projections called villi and helps form the placenta?
Amnion
Chorion
Umbilicus
Trophoblast
4. Which of the following is a disclike structure where the fetal and maternal circulations meet (baby eats, excretes, and breathes at this site)?
Umbilicus
Placenta
Primary germ layers
Zygote
5. Which of the following develops first?
Morula
Trophoblast
Blastomere
Zygote
6. Which cream cheese–like substance is secreted by baby’s sebaceous glands and protects the skin from the amniotic fluid?
Lanugo
Colostrum
Vernix caseosa
Meconium
7. Which word refers to milk production by the mammary glands?
Implantation
Parturition
Lactation
Quickening
8. What is the name of the fine downy hair that covers the fetus?
Vernix caseosa
Lanugo
Colostrum
Meconium
9. What is the name of the yellowish watery fluid secreted by the mammary glands immediately after delivery (baby is nourished on this until the mother’s milk comes in)?
Lanugo
Vernix caseosa
Meconium
Colostrum
10. Which hormone is secreted by the trophoblastic cells during implantation and helps preserve the corpus luteum?
Estrogen
Progesterone
hCG
FSH
11. In addition to acting as an exchange site between the mother and fetus, the placenta also secretes
estrogen and progesterone.
amniotic fluid.
vernix caseosa.
colostrum.
12. Which of the following is divided into trimesters?
Conception
Fertilization
Pregnancy
Ovulation
13. Which of the following is most related to fertilization?
Broad ligament
Implantation
Menses
23 chromosomes plus 23 chromosomes
14. Which of the following is true of implantation?
It is called conception.
It is divided into trimesters.
It is stimulated by FSH and LH.
It occurs within the uterus.
15. Which of the following is most descriptive of a zygote?
Fertilized ovum
Mature sperm
Graafian follicle
Fetus
16. What “lives” in the fallopian tube for a brief period of time?
An embryo
A fetus
A blastocyst
A zygote
17. Which of the following is most related to the word ectopic?
Tubal pregnancy
Labor
Lactation
Endometriosis
18. What is the name of the developmental process that refers to the shaping of the cell cluster?
Implantation
Conception
Morphogenesis
Fertilization
19. Afterbirth refers primarily to which structure?
Morula
Zygote
Fetus
Placenta
20. Which hormone literally means “swift birth” and assists in labor?
Prostaglandin
Progesterone
Oxytocin
Prolactin
