91. An embryo becomes a fetus about A. 14 days : 1380684.
91. An embryo becomes a fetus about
A. 14 days after fertilization.
B. 30 days after fertilization.
C. 60 days after fertilization.
D. 3 months after fertilization.
E. 6 months after fertilization.
92. The major difference between an embryo and a fetus is that
A. a fetus can survive outside the mother’s womb but an embryo cannot.
B. a fetus is smaller than an embryo.
C. organ systems are developing in an embryo while all organs are present in a fetus.
D. a fetus is a male child while an embryo is a female child.
E. None of these choices is correct.
93. Fine, soft hair that covers the fetus is called
A. lanugo.
B. fetal hair.
C. colostrum.
D. vernix caseosa.
E. primary hair.
94. The waxy coat of sloughed epithelial cells that covers the fetus is called
A. lanugo.
B. fetal hair.
C. colostrum.
D. vernix caseosa.
E. primary hair.
95. The type of fetal monitoring that uses sound waves to visualize the developing fetus is
A. fetoscopy.
B. ultrasound.
C. amniocentesis.
D. chorionic villi sampling.
E. auscultation.
96. An infant born with a gestational age of 254 days would be considered
A. premature.
B. normal maturity.
C. postmature.
D. immature.
E. None of these choices is correct.
97. One of the major problems a premature infant may develop is respiratory distress syndrome. This occurs because in a premature infant
A. oxygen transport is impaired.
B. surfactant isn’t produced.
C. the lungs are collapsed.
D. there aren’t enough red blood cells to carry oxygen.
E. there is mixing of the arterial and venous blood.
98. The birth process is called
A. micturition.
B. gastrulation.
C. organogenesis.
D. parturition.
E. expulsion.
99. The stage of labor in which the fetus is expelled is
A. the first stage.
B. the second stage.
C. the third stage.
D. the fourth stage.
E. the fifth stage.
100. Which of the following events near the end of pregnancy might indicate parturition is near?
A. The cervix gradually constricts.
B. The uterus begins regular contractions.
C. The amniotic sac becomes edematous.
D. The fetal heart rate increases to greater than 160 beats per minute.
E. The cervix shrinks.
