Human Anatomy & Physiology (9th Edition)

Published by Pearson
ISBN 10: 0321743261
ISBN 13: 978-0-32174-326-8

Chapter 28 - Pregnancy and Human Development - Review Questions - Page 1093: 2



Work Step by Step

The Respiratory System is the exception to the generalization that most systems are operational by 4 to 6 months because the placenta is in charge of delivering oxygen to the fetus because the lungs are filled with amniotic fluid, When the baby is born is when the lungs finally deliver oxygen and the respiratory system functions normally.
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