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: 11



Work Step by Step

The placenta is an organ that forms the connection between uterine wall and the developing fetus. It is made up of embryonic and maternal tissues. The function of the placenta is to act as the nutritive, excretory and respiratory organ of the fetus. In addition, it also produces the hormones of pregnancy. Substances that can cross placenta are glucose, amino acid, antibodies, water and electrolytes. Blood cells cannot cross placenta.
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