Human Body in Health and Illness 6th Edition Herlihy Test Bank
Chapter 27: Human Development and Heredity
Herlihy: The Human Body in Health and Illness, 6th Edition .
MULTIPLE CHOICE
1. Which structure is commonly called the bag of waters (it breaks prior to delivery and often
signals the onset of labor)?
a. Primary germ layers
b. Morula
c. Amniotic sac
d. Blastocyst
ANS: C
2. What term describes the ectoderm, mesoderm, and endoderm?
a. Inner cell mass
b. Extraembryonic membranes
c. Primary germ layers
d. Blastomeres
ANS: C
3. What is the outer extraembryonic membrane that forms finger-like projections called villi and
helps form the placenta?
a. Amnion
b. Chorion
c. Umbilicus NURSINGTB.COM
d. Trophoblast
ANS: B
4. Which of the following is a disclike structure where the fetal and maternal circulations meet
(baby eats, excretes, and breathes at this site)?
a. Umbilicus
b. Placenta
c. Primary germ layers
d. Zygote
ANS: B
5. Which of the following develops first?
a. Morula
b. Trophoblast
c. Blastomere
d. Zygote
ANS: D
6. Which cream cheese-like substance is secreted by baby’s sebaceous glands and protects the
skin from the amniotic fluid?
a. Lanugo
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, Human Body in Health and Illness 6th Edition Herlihy Test Bank
b. Colostrum
c. Vernix caseosa
d. Meconium
ANS: C
7. Which word refers to milk production by the mammary glands?
a. Implantation
b. Parturition
c. Lactation
d. Quickening
ANS: C
8. What is the name of the fine downy hair that covers the fetus?
a. Vernix caseosa
b. Lanugo
c. Colostrum
d. Meconium
ANS: B
9. Which of the following describes the consequence of this event: two ova are fertilized by two
different sperm?
a. Monozygotic twins
b. Identical twins
c. Dizygotic twins
d. More than one of the above are true.
N R I G
U S N TB.COM
ANS: C
10. Which hormone is secreted by the trophoblastic cells during implantation and helps preserve
the corpus luteum?
a. Estrogen
b. Progesterone
c. hCG
d. FSH
ANS: C
11. In addition to acting as an exchange site between the mother and fetus, the placenta also
secretes
a. estrogen and progesterone.
b. amniotic fluid.
c. vernix caseosa.
d. colostrum.
ANS: A
12. Which of the following is divided into trimesters?
a. Conception
b. Fertilization
c. Pregnancy
NURSINGTB.COM
Chapter 27: Human Development and Heredity
Herlihy: The Human Body in Health and Illness, 6th Edition .
MULTIPLE CHOICE
1. Which structure is commonly called the bag of waters (it breaks prior to delivery and often
signals the onset of labor)?
a. Primary germ layers
b. Morula
c. Amniotic sac
d. Blastocyst
ANS: C
2. What term describes the ectoderm, mesoderm, and endoderm?
a. Inner cell mass
b. Extraembryonic membranes
c. Primary germ layers
d. Blastomeres
ANS: C
3. What is the outer extraembryonic membrane that forms finger-like projections called villi and
helps form the placenta?
a. Amnion
b. Chorion
c. Umbilicus NURSINGTB.COM
d. Trophoblast
ANS: B
4. Which of the following is a disclike structure where the fetal and maternal circulations meet
(baby eats, excretes, and breathes at this site)?
a. Umbilicus
b. Placenta
c. Primary germ layers
d. Zygote
ANS: B
5. Which of the following develops first?
a. Morula
b. Trophoblast
c. Blastomere
d. Zygote
ANS: D
6. Which cream cheese-like substance is secreted by baby’s sebaceous glands and protects the
skin from the amniotic fluid?
a. Lanugo
NURSINGTB.COM
, Human Body in Health and Illness 6th Edition Herlihy Test Bank
b. Colostrum
c. Vernix caseosa
d. Meconium
ANS: C
7. Which word refers to milk production by the mammary glands?
a. Implantation
b. Parturition
c. Lactation
d. Quickening
ANS: C
8. What is the name of the fine downy hair that covers the fetus?
a. Vernix caseosa
b. Lanugo
c. Colostrum
d. Meconium
ANS: B
9. Which of the following describes the consequence of this event: two ova are fertilized by two
different sperm?
a. Monozygotic twins
b. Identical twins
c. Dizygotic twins
d. More than one of the above are true.
N R I G
U S N TB.COM
ANS: C
10. Which hormone is secreted by the trophoblastic cells during implantation and helps preserve
the corpus luteum?
a. Estrogen
b. Progesterone
c. hCG
d. FSH
ANS: C
11. In addition to acting as an exchange site between the mother and fetus, the placenta also
secretes
a. estrogen and progesterone.
b. amniotic fluid.
c. vernix caseosa.
d. colostrum.
ANS: A
12. Which of the following is divided into trimesters?
a. Conception
b. Fertilization
c. Pregnancy
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