Gonades testes and Ovaries Human Endocrine System | class 12 biology

Welcome back to irtisam's biology! In this lecture, we cover Gonads (Testes & Ovaries) as Endocrine Organs, an essential topic from Chapter 17 (Chemical Coordination) for Class 12 / F.Sc Part-II Biology, FBISE, Punjab Board, and MDCAT preparation. Understand the dual exocrine/endocrine nature of gonads, the production of sex hormones, their target organs, and feedback mechanisms with the pituitary gland. 📌 Key Concepts Covered: Dual Function: Gametogenesis vs. Endocrine Secretion Male Gonads (Testes): Leydig (Interstitial) cells and Testosterone Regulation of secondary sexual characteristics & spermatogenesis Female Gonads (Ovaries): Estrogen: Follicular development, uterine lining, and secondary sexual characteristics Progesterone: Corpus luteum, pregnancy maintenance, and endometrial growth Relaxin and Inhibin (brief overview) Hormonal Axis: Hypothalamic GnRH, Pituitary LH & FSH regulation Expected Board Exam Questions & MDCAT MCQs Subscribe to irtisam's biology for complete Class 12 Biology lectures, test session discussions, and MDCAT preparation! #IrtisamsBiology #Class12Biology #FScPart2 #ChemicalCoordination #Gonads #EndocrineSystem #Testosterone #Estrogen #Progesterone #MDCAT2026 #PunjabBoard #FBISE