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Hypothalamus Differences in the Male and Female - Anatomy & Physiology (view source)
Revision as of 13:42, 13 September 2010
, 13:42, 13 September 2010no edit summary
* The [[Hypothalamus_-_Anatomy_%26_Physiology|hypothalamus]] is inherently female.
* The [[Hypothalamus_-_Anatomy_%26_Physiology|hypothalamus]] is inherently female.
* [[Endocrine_System_-_Testes_-_Anatomy_%26_Physiology|Testosterone]] 'defeminizes' the brain during embryogenesis and eliminates the GnRH surge centre in males.
* [[Testes Endocrine Function_-_Anatomy_%26_Physiology|Testosterone]] 'defeminizes' the brain during embryogenesis and eliminates the GnRH surge centre in males.
* The female foetus has no testes to produce [[Endocrine_System_-_Testes_-_Anatomy_%26_Physiology|testosterone]], thus developes a [[Hypothalamus_-_Anatomy_%26_Physiology|hypothalamic]] GnRH surge centre.
* The female foetus has no testes to produce [[Testes Endocrine Function_-_Anatomy_%26_Physiology|testosterone]], thus developes a [[Hypothalamus_-_Anatomy_%26_Physiology|hypothalamic]] GnRH surge centre.
== Defeminizing the Hypothalamus in the Male ==
== Defeminizing the Hypothalamus in the Male ==
* As a result, LH does not surge, it maintains a relatively consistent episodic pattern of secretion every day.
* As a result, LH does not surge, it maintains a relatively consistent episodic pattern of secretion every day.
** Episodes occur every 2-6 hours in the postpubertal male.
** Episodes occur every 2-6 hours in the postpubertal male.
* Steady, pulsatile GnRH and LH release results in a steady, pulsatile release of [[Endocrine_System_-_Testes_-_Anatomy_%26_Physiology|testosterone]].
* Steady, pulsatile GnRH and LH release results in a steady, pulsatile release of [[Testes Endocrine Function_-_Anatomy_%26_Physiology|testosterone]].
== The Female Hypothalamus ==
== The Female Hypothalamus ==