All Acronyms. ESIM - Evaporative System Integrity Monitor [Internet]; Apr 16, 2017 [cited 2017 Apr 16]. Available from: https://www.allacronyms.com/ESIM/Evaporative_System_Integrity_Monitor.
The development of the gonads is part of the prenatal development of the reproductive system and ultimately forms the testes in males and the ovaries in females. The gonads initially develop from the mesothelial layer of the peritoneum. The ovary is differentiated into a central part, the medulla, covered by a surface layer, the germinal epithelium.
1 These high estrogen levels trigger a sudden increase in another hormone called LH (Luteinizing Hormone). The soâcalled LH surge causes the release of the egg from the ovary and youâre ovulating.  Ovulation normally occurs 24 to 36 hours after the LH surge, which is why LH is a good predictor for peak fertility.