Chapter 22 Growth and Development

Chapter 22: Growth and Development


MULTIPLE CHOICE

1. Fertilization usually occurs in the
a. ovary
b. uterus
c. oviduct
d. vagina
ANS: C DIF: Memorization REF: p. 486
OBJ: 2 TOP: Prenatal period

2. The fertilized egg is called
a. a zygote
b. an ovum
c. a morula
d. a blastocyst
ANS: A DIF: Memorization REF: p. 486
OBJ: 2 TOP: Prenatal period

3. After about 3 days, the fertilized egg becomes a mass of cells called a
a. zygote
b. morula
c. blastocyst
d. fetus

ANS: B DIF: Memorization REF: p. 486
OBJ: 2 TOP: Prenatal period

4. By the time the fertilized egg reaches the uterus, it is a hollow ball of cells called a
a. zygote
b. morula
c. blastocyst
d. fetus
ANS: C DIF: Memorization REF: p. 486
OBJ: 2 TOP: Prenatal period

5. The structure that anchors the developing fetus and acts as a bridge between mother and baby
is the
a. yolk sac
b. amnion
c. uterus
d. placenta

ANS: D DIF: Memorization REF: p. 487
OBJ: 2 TOP: Prenatal period

6. The placenta functions as a
a. respiratory organ

, b. excretory organ
c. endocrine organ
d. all of the above

ANS: D DIF: Memorization REF: p. 488
OBJ: 2 TOP: Prenatal period

7. The kidney ducts, bladder, thyroid gland, and tonsils all develop from the primary germ layer
called the
a. ectoderm
b. mesoderm
c. endoderm
d. none of the above
ANS: C DIF: Memorization REF: p. 490
OBJ: 3 TOP: Primary germ layer derivatives

8. The circulatory system, gonads, and muscles develop from the primary germ layer called the
a. ectoderm
b. mesoderm
c. endoderm
d. none of the above
ANS: B DIF: Memorization REF: p. 490
OBJ: 3 TOP: Primary germ layer derivatives

9. The brain, spinal cord, and lens and cornea of the eye develop from the primary germ layer
called the
a. ectoderm
b. mesoderm
c. endoderm
d. none of the above
ANS: A DIF: Memorization REF: p. 490
OBJ: 3 TOP: Primary germ layer derivatives

10. The development of tissues is called
a. organogenesis
b. histogenesis
c. oogenesis
d. speciation
ANS: B DIF: Memorization REF: p. 489
OBJ: 3 TOP: Histogenesis and organogenesis

11. Stage 3 of labor ends with the
a. delivery of the baby
b. dilation of the cervix
c. rupture of the amniotic sac
d. expulsion of the placenta from the uterus
ANS: D DIF: Memorization REF: p. 491
OBJ: 4 TOP: Birth, or parturition

, 12. Infancy
a. begins at birth
b. ends at about 18 months
c. includes the neonatal period
d. all of the above
ANS: D DIF: Memorization REF: p. 495
OBJ: 5 TOP: Postnatal period

13. The baby’s first breath is stimulated primarily by
a. the lack of oxygen in the blood
b. the accumulation of carbon dioxide in the blood
c. exposure to the ―coldǁ temperatures outside the uterus
d. the rigors of the birth process
ANS: B DIF: Application REF: p. 495 OBJ: 5
TOP: Postnatal period

14. The full closure of bone growth plates occurs during
a. late childhood
b. early adolescence
c. late adolescence
d. early adulthood
ANS: D DIF: Memorization REF: p. 496
OBJ: 5 TOP: Postnatal period

15. Lipping
a. is a skin condition caused by aging
b. is a degenerative joint disease
c. is when bones develop indistinct and shaggy-appearing margins
d. none of the above
ANS: C DIF: Memorization REF: p. 497
OBJ: 6 TOP: Effects of aging

16. As the urinary system ages
a. the number of nephrons decreases
b. the blood flow to the kidney is reduced
c. the muscles of the bladder begin to atrophy
d. all of the above
ANS: D DIF: Memorization REF: p. 498
OBJ: 6 TOP: Effects of aging

17. As the respiratory system ages
a. the costal cartilages harden
b. a condition called ―barrel chestǁ develops
c. the strength of inspiratory and expiratory muscles decreases
d. all of the above
ANS: D DIF: Memorization REF: p. 498