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[Physiology and pharmacology of ejaculation]
Olivier Rampin1, François Giuliano
1Analyse et Modélisation en Imagerie Biologique, Bat. 327, INRA 78357, Jouy-en-Josas Cedex.
Journal De La Societe De Biologie
|January 25, 2005
Summary
Ejaculation involves complex peripheral and central nervous system interactions. Understanding these neurobiological pathways is key for addressing related sexual dysfunctions.
Area of Science:
- Neuroscience
- Physiology
- Urology
Context:
- Ejaculation is a complex physiological process involving peripheral organs and central nervous system control.
- It integrates autonomic and somatic nervous system functions, influenced by hormonal and neurotransmitter systems.
Purpose:
- To review the peripheral innervation and central control mechanisms governing ejaculation.
- To highlight key regulatory sites and neurotransmitter systems involved in the control of ejaculation.
Summary:
- Ejaculation involves smooth and skeletal muscle activity, driven by autonomic and somatic innervations originating from the spinal cord.
- Central control involves cerebral structures like the median preoptic area and hypothalamic paraventricular nucleus, with significant roles for noradrenergic, serotoninergic, and dopaminergic systems.
- Peripheral innervation is predominantly sympathetic, releasing noradrenaline and neuropeptides, with contributions from parasympathetic and somatic components.
Impact:
- Provides a comprehensive overview of the neuroanatomy and neurophysiology of ejaculation.
- Identifies potential targets for pharmacological interventions in treating ejaculatory dysfunctions.