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Puberty Onset Influencing Factors - Anatomy & Physiology (view source)
Revision as of 10:01, 8 September 2008
, 10:01, 8 September 2008→Female Threshold Body Size
== Female Threshold Body Size ==
== Female Threshold Body Size ==
* Nutritional intake of the newborn is directed towards body maintenance.
* The priority of the neonate is to maintain vital physiological functions.
* Non-essential processes, such as reproduction are of low priority.
* As the neonate grows, energy consumption increases and the body mass increases with a relative decrease in body surface area.
* This allows a shift in metabolic expenditure so that other physiological functions can develop.
* The excess internal energy is converted to fat stores, and a priority is then placed on reproduction so the onset of puberty begins.
* Fat accumulation alone does not determine the onset of puberty, but it is an important regulator.
* All female mammals must reach a certain body size before the onset of puberty can be initiated.
* All female mammals must reach a certain body size before the onset of puberty can be initiated.
* Metabolic signals affect production of GnRH.
* Metabolic signals affect production of GnRH.