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Introduction to Female Reproductive Endocrinology

by Thad Wilson, PhD
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    Female Reproductive Endocrinology. We're going to go through the processes associated with producing estradiol and progesterone. There are a number of hypothalamic-pituitary-gonadal-axis issues we need to deal with. So similar to our other HPA axis, there is a three-step process in which we have hypothalamic release of a releasing hormone, will stimulate the pituitary gland, the anterior pituitary, and then we'll have a release of a pituitary stimulatory. In fact this time we'll have two LH and FSH and that will stimulate the ovaries and that is our hypothalamic-pituitary-ovarian axis. The parts of the hypothalamus we need to be especially concerned with here are the preoptic regions and the supraoptic regions. These are the two portions of the hypothalamus that will project their particular axons to the blood vessels that then will perfuse the anterior pituitary. Here we're going to be stimulating gonadotropes. Gonadotropes will then release luteinizing hormone and follicle-stimulating hormone. The control of luteinizing hormone and follicle-stimulating hormone adds another layer with pulsatile secretions. Thus, throughout the course of a woman's life, there will be a number of pulsatile secretions that help control the levels of the hormones. This pulsatile secretion, I think is very helpful if you want to think about not needing to have high levels of these hormones all the time. You can keep hormone levels little bit lower if you allow them to pulse. So let's go through some of the pulses that occur in woman's life. Early on with being a fetus and in infancy, there are some large spikes of luteinizing hormone and follicle-stimulating hormone. Then it's kind of quiescent for a number of years before adolescence. Then as a young woman starts to develop and then in the reproductive years, you'll see a large number of spikes that occur. These spikes...

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    The lecture Introduction to Female Reproductive Endocrinology by Thad Wilson, PhD is from the course Reproductive Physiology.


    Author of lecture Introduction to Female Reproductive Endocrinology

     Thad Wilson, PhD

    Thad Wilson, PhD


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