This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Female Reproductive System, Subject name: Physiology
[{'content': 'Follicle stimulating hormone (FSH) receptors are present on: \nSelect and explain. \nA. Theca cells, B. Granulosa cells, C. Leydig cells, D. Basement membrane of ovarian follicle', 'role': 'user'}, {'content': 'Answer: B \nExplanation: FSH receptor is a specific G-protein coupled receptor. It is present in granulosa cells (ovary) and Seoli cells (testis). cAMP is the second messenger; it stimulates production of CREB-P and CREM-P (transcription factors that initiate expression of target genes). FSH stimulation of granulosa cells produces estradiol; stimulation of Seoli cells produces inhibin. Theca cells (ovaries) and Leydig cells (testis) have receptors for LH. Both FSH and LH downregulate their receptors.', 'role': 'assistant'}]