(Reproduced, with permission, from Langman J, Sadler TW (Reproduced, with permission, from Langman J, Sadler TW. Langman's Medical Embryology. 8th ed. Lippincott Williams & Wilkins; 2000.) Source: Chapter 13. Female Reproductive Endocrinology and Infertility, Greenspan’s Basic & Clinical Endocrinology, 9e Citation: Gardner DG, Shoback D. Greenspan’s Basic & Clinical Endocrinology, 9e; 2011 Available at: http://accessbiomedicalscience.mhmedical.com/DownloadImage.aspx?image=/data/books/gard9/gard9_c013f001.gif&sec=39748009&BookID=380&ChapterSecID=39744053&imagename= Accessed: October 31, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved