Next question-where does the oestrogen come from??? Is it related to ovarian eggs?? If an egg is produced, the lining thickens???? In IVF-the more eggs, the thicker the lining???? Is this correct or no??
Hmm, hope you don't mind all the questions. You can send me a bill if you like!!! !!!!
Hope you're having a great day!
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hey! No bill, this one's on me . But I'll have to dredge my old bag memory to see if I can get the hormone side of it right.
Basically, at the start of a cycle the pituitary gland secretes Follicle Stimulating Hormone/FSH so that the egg will mature within the ovary and the ovary will start to produce oestrogen - so the oestrogen actually comes from the ovary itself. Oestrogen then stops FSH so only one egg matures (you can see mature follicles on ultrasound, usually one of the ovaries has a bigger follicle - the dominant follicle) and then also stimulates the pituitary to release LH/Luteinising Hormone as well as causing the endometrium to start thickening up. LH causes the dominant follicle to release the egg.
LH causes the corpus luteum to develop from the ruptured follicle which then produces progesterone to support the thickening endometrium.
I think that's right...feel free to correct me anyone!
Hope that helps Dwrgi!
Thank you, it does. You're brilliant!!