Who doesn't miss those awkward days of pimples, voice changes, hormones raging and all the social awkwardness that come right along with it?
Glencoe Biology: Online Textbook Help That's where And that's it - the control of puberty and male reproduction comes down to a handful of hormones that all work together. Used by over UExcel Anatomy & Physiology: Study Guide & Test Prep
These functions include: Both of these involve key hormones within the hypothalamus.
), both stimulate cells called The second job of testosterone brings us to something called In this case, when testosterone levels get too high, the body needs a way to decrease its production. Once GnRH gets to the pituitary, specifically the anterior pituitary, it diffuses out of the blood and into endocrine cells that are located in the GnRH communicates with two specific endocrine cells within the anterior pituitary.
6:06 If you're familiar with testicular anatomy, you may recall that the testes have two main divisions. Spermatogenesis: How the Male Reproductive System Produces Sperm
The HPG axis plays a critical part in the development and regulation of a number of the body's systems, such as the reproductive and immune systems. College Chemistry: Help and Review Biology 101: Intro to Biology
Gonadotrophin releasing hormone (GnRH) from the hypothalamus stimulates lutenising hormone (LH) and follicular stimulating hormone (FSH) release from the anterior pituitary gland.
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Male Reproductive System: Functions, Organs & Anatomy Phases of The Ovarian Cycle: Overview from Puberty to Menopause What Is Menstruation?
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Loss of function of LH receptors can cause male pseudohermaphroditism.
It's still there, but just like the rest of your body declines with old age, so does your sperm.
While only a cursory understanding of the hypothalamic-pituitary-gonadal (HPG) axis is needed in general urological practice, practitioners of male sexual and reproductive medicine must have a thorough and deep understanding of the HPG axis and how alterations in this system can affect the physiology and pathophysiology of both spermatogenesis and testosterone production. I mean, we can't just have all these hormones being produced with no way to control them, right?
We already know that FSH and testosterone work together to promote sperm production, but that's not all FSH does.
Sounds familiar, right? HPG Axis: Hormonal Control of the Ovarian Cycle
Remember, LH release is dependent on the levels of GnRH.
The function of GnRH is right there in its name.
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Now, let's take a moment to think about this.
Disorders of the hypothalamic–pituitary–gonadal axis are classified by the World Health Organization (WHO) as:
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Causes of Tectonic Plate Movement How does the brain get in touch with other parts of the body? That's a lot of information, but I think we've got it all covered. 11:14 6:21 Think about what would happen if LH was blocked. So, high testosterone sends a signal from the testes back to the hypothalamus.
first two years of college and save thousands off your degree. Well, we all know that it is the male sex hormone and that athletes can take it to get big muscles! Ah - where have we heard that term before? That's right, without these spaces, the testes wouldn't be producing any testosterone, and we all know how important the male sex hormone is!
8:14
Male HPG Axis.
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