Directions: Please read each question carefully and select the best answer.
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
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