Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 42 - Self-Quiz - Page 761: 14

Answer

d. human chorionic gonadotropin

Work Step by Step

Human chorionic gonadotropin, or HCG, is produced by the chorion and helps to maintain the uterus for pregnancy. HCG can be detected in the mother's urine by the third week of pregnancy. It is this HCG in the mother's urine that is detected by pregnancy tests.
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