Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 18 - Engage - Page 410: 1

Answer

Human chorionic gonadotropin (hCG) is first secreted by the trophoblast (CL) and then by the chorion of the placenta. It is filtered from the blood at the glomeruli, but it is not reabsorbed at the loop of Henle, so it appears in the urine early in pregnancy.

Work Step by Step

Human chorionic gonadotropin (hCG) is first secreted by the trophoblast (CL) and then by the chorion of the placenta. It is filtered from the blood at the glomeruli, but it is not reabsorbed at the loop of Henle, so it appears in the urine early in pregnancy.
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