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Walsh Neonatal and Pediatric Respiratory Care, 5th Edition Test Bank.
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TEST BANK FOR NEONATAL AND PEDIATRIC RESPIRATORY CARE 5TH EDITION
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Neonatal and Pediatric Respiratory Care 5th Edition Walsh Test Bank A+
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Test Bank - Neonatal and Pediatric Respiratory Care, 5th Edition (Walsh, 2019), Chapter 1-36 | All Chapters
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Chapter 02: Fetal Gas Exchange and Circulation
Walsh: Neonatal and Pediatric Respiratory Care, 5th Edition
MULTIPLE CHOICE
1. Which of the following embryonic germ layers gives formation to the respiratory system?
a. Endoderm
b. Mesoderm
c. Ectoderm
d. Periderm
ANS: A
The respiratory system—pharynx, lungs, and epithelial lining of the trachea and lungs—
originates in the endoderm. Refer to Box 2-1 in the textbook to see the list of various tissue
systems found in the three embryonic layers.
2. What is the function of Wharton’s jelly inside the umbilical cord?
a. To help provide nutrition to the fetus
b. To prevent the vessels inside the cord from kinking
c. To help protect the fetus
d. To regulate the temperature between the fetus and the mother
ANS: B
Wharton’s jelly, a gelatinous substance inside the umbilical cord, helps protects the vessels of
the fetus and may prevent the cord from kinking.
3. Which of the following organ is considered to be the first complete form?
a. Heart
b. Brain
c. Lungs
d. Kidneys
ANS: A
The heart is considered to be the first complete organ formed. By 8 weeks of gestation, the
normal fetal heart is fully functional, complete with all chambers, valves, and major vessels.
4. A pregnant woman is coming for an early prenatal evaluation and wants to know if she can
listen to the baby’s heartbeat. How early can the fetal heartbeat be detected?
a. Day 8
b. Day 22
c. Day 45
d. Day 60
ANS: B
By day 22, cardiac contractions are detectable and bidirectional tidal blood flow begins.
5. Which of the following anatomic structures are fetal shunts?
I. Foramen ovale
II. Sinus venosus
III. Ductus venosus
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