ATI Fetal Development- Set 3 (E1) ||with solved solutions.
What is the embryonic membrane that contains fingerlike projections on its surface, which attach
to the uterine wall?
a. Amnion
b. Yolk sac
c. Chorion
d. Decidua basalis correct answersAnswer: c. Chorion
Rationale: The chorion is a thick membrane with fingerlike projections (villi) on its outermost
surface.
A patient asks the nurse when her infants heart will begin to pump blood. What will the nurse
reply?
a. By the end of week 3.
b. Beginning in week 8.
c. At the end of week 16.
d. Beginning in week 24. correct answersAnswer: a. By the end of week 3.
Rationale: The fetal heart begins to pump by week 3 of gestation.
What complication can result from untreated respiratory distress in the newborn?
a. Esophageal atresia.
b. Gastric dilation.
c. Cold stress.
d. Reopening of the foramen ovale. correct answersAnswer: d. Reopening of the foramen ovale.
Rationale: Respiratory distress can cause increased pressure in the right ventricle, causing
reopening of the foramen ovale.
During an ultrasound, two amnions and two placentas are observed. What will be the most likely
result of this pregnancy?
a. Dizygotic twins.
, b. Monozygotic twins.
c. Conjoined twins.
d. High birth-weight twins. correct answersAnswer: a. Dizygotic twins.
Rationale: Dizygotic twins always have two amnions and two chorions (placentas).
A woman who is 25 weeks pregnant asks the nurse what her fetus looks like. What does the
nurse explain is one physical characteristic present in a 25-week-old fetus?
a. Lanugo covering the body.
b. Constant motion.
c. Skin that is pink and smooth.
d. Eyes that are closed. correct answersAnswer: a. Lanugo covering the body.
Rationale: By 25 weeks, the body of the fetus is covered with lanugo, the eyes are open, the skin
is wrinkled, and the fetus has definite periods of movement and sleeping.
At what point in prenatal development do the lungs begin to produce surfactant?
a. 17 weeks
b. 20 weeks
c. 25 weeks
d. 30 weeks correct answersAnswer: c. 25 weeks
Rationale: During week 25, the alveoli begin to produce surfactant, which enables the alveoli to
stay open for adequate lung oxygenation to occur.
A woman missed her menstrual period 1 week ago and has come to the doctors office for a
pregnancy test. Which placental hormone is measured in pregnancy tests?
a. Progesterone.
b. Estrogen.
c. Human chorionic gonadotropin.
d. Human placental lactogen. correct answersAnswer: c. Human chorionic gonadotropin.
What is the embryonic membrane that contains fingerlike projections on its surface, which attach
to the uterine wall?
a. Amnion
b. Yolk sac
c. Chorion
d. Decidua basalis correct answersAnswer: c. Chorion
Rationale: The chorion is a thick membrane with fingerlike projections (villi) on its outermost
surface.
A patient asks the nurse when her infants heart will begin to pump blood. What will the nurse
reply?
a. By the end of week 3.
b. Beginning in week 8.
c. At the end of week 16.
d. Beginning in week 24. correct answersAnswer: a. By the end of week 3.
Rationale: The fetal heart begins to pump by week 3 of gestation.
What complication can result from untreated respiratory distress in the newborn?
a. Esophageal atresia.
b. Gastric dilation.
c. Cold stress.
d. Reopening of the foramen ovale. correct answersAnswer: d. Reopening of the foramen ovale.
Rationale: Respiratory distress can cause increased pressure in the right ventricle, causing
reopening of the foramen ovale.
During an ultrasound, two amnions and two placentas are observed. What will be the most likely
result of this pregnancy?
a. Dizygotic twins.
, b. Monozygotic twins.
c. Conjoined twins.
d. High birth-weight twins. correct answersAnswer: a. Dizygotic twins.
Rationale: Dizygotic twins always have two amnions and two chorions (placentas).
A woman who is 25 weeks pregnant asks the nurse what her fetus looks like. What does the
nurse explain is one physical characteristic present in a 25-week-old fetus?
a. Lanugo covering the body.
b. Constant motion.
c. Skin that is pink and smooth.
d. Eyes that are closed. correct answersAnswer: a. Lanugo covering the body.
Rationale: By 25 weeks, the body of the fetus is covered with lanugo, the eyes are open, the skin
is wrinkled, and the fetus has definite periods of movement and sleeping.
At what point in prenatal development do the lungs begin to produce surfactant?
a. 17 weeks
b. 20 weeks
c. 25 weeks
d. 30 weeks correct answersAnswer: c. 25 weeks
Rationale: During week 25, the alveoli begin to produce surfactant, which enables the alveoli to
stay open for adequate lung oxygenation to occur.
A woman missed her menstrual period 1 week ago and has come to the doctors office for a
pregnancy test. Which placental hormone is measured in pregnancy tests?
a. Progesterone.
b. Estrogen.
c. Human chorionic gonadotropin.
d. Human placental lactogen. correct answersAnswer: c. Human chorionic gonadotropin.
