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Hypothalamus Differences in the Male and Female - Anatomy & Physiology (view source)
Revision as of 14:57, 16 August 2009
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|linktext =Reproductive System
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|pagetype =Anatomy
|sublink1=Reproductive System - Anatomy & Physiology#Puberty
|sublink1=Reproductive System - Anatomy & Physiology#Puberty
|subtext1=PUBERTY
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== Defeminizing the Hypothalamus in the Male ==
== Defeminizing the Hypothalamus in the Male ==
* Testosterone crosses the [[Blood_Brain_Barrier_%28BBB%29|blood-brain barrier]] and is converted into oestradiol.
* Testosterone crosses the [[Blood Brain Barrier - Anatomy & Physiology|blood-brain barrier]] and is converted into oestradiol.
* In the brain, oestradiol 'defeminizes' the [[Hypothalamus_-_Anatomy_%26_Physiology|hypothalamus]].
* In the brain, oestradiol 'defeminizes' the [[Hypothalamus_-_Anatomy_%26_Physiology|hypothalamus]].
* Surge centre function is minimized.
* Surge centre function is minimized.
* Foetal ovaries produce oestradiol, but this does NOT defeminize the [[Hypothalamus_-_Anatomy_%26_Physiology|Hypothalamus]].
* Foetal ovaries produce oestradiol, but this does NOT defeminize the [[Hypothalamus_-_Anatomy_%26_Physiology|Hypothalamus]].
* A protein called alpha-fetoprotein binds oestradiol to prevent it from crossing the [[Blood_Brain_Barrier_%28BBB%29|blood brain barrier]], therefore oestradiol cannot effect the [[Hypothalamus_-_Anatomy_%26_Physiology|Hypothalamus]].
* A protein called alpha-fetoprotein binds oestradiol to prevent it from crossing the [[Blood Brain Barrier - Anatomy & Physiology|blood brain barrier]], therefore oestradiol cannot effect the [[Hypothalamus_-_Anatomy_%26_Physiology|Hypothalamus]].
* Alpha-fetoprotein is synthesized firstly by the embryonic yolk sac and then by the foetal liver.
* Alpha-fetoprotein is synthesized firstly by the embryonic yolk sac and then by the foetal liver.
* Alpha fetoprotein functions as:
* Alpha fetoprotein functions as: