Chapter 20, Problem 12bCP

Summary Introduction

To review:

The source of HCG (human chorionic gonadotropin) hormone along with its role in maintaining pregnancy for the first 10 weeks.

Introduction:

Corpus luteum increases the secretion of progesterone as well as maintains the elevated levels of this hormone for implantation of fertilized zygote. In case fertilization does not take place, the corpus luteum undergoes regression and the level of progesterone also declines accordingly.