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Erection - Anatomy & Physiology (view source)
Revision as of 11:06, 10 July 2008
, 11:06, 10 July 2008→Sensory Input and Local Vascular Response
* Stimuli cause afferent sensory nerves to fire.
* Stimuli cause afferent sensory nerves to fire.
* Terminals synapse with neurons in the ''''behaviour centre'''' in the [[Endocrine_System_-_Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|Hypothalamus]].
* Terminals synapse with neurons in the ''''behaviour centre'''' in the [[Endocrine_System_-_Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|Hypothalamus]].
* Hypothalamic neurones synapse with parasympathetic and sympathetic efferent neurons that control penile vascular smooth muscle (vascular tone).
* Firing of Nonadrenergic, noncholinergic (NANC) parasympathetic neurones causes erection.
** Release nitric oxide (NO) from their terminals.
** NO is the principle neurotransmitter that drives the erectile process.
'''''Local Vascular Component'''''
'''''Local Vascular Component'''''