Question

What are the regions of the brain involved in Male sexual behavior, what is the possible link between male sexuality and aggression and how does the sympathetic and parasympatheic nervous systems interact in delivering orgasm?

Answer 1

The hypothalamus region ( specifically,medial preoptic area and medial amygdala)of brain is involved in male sexual behaviour, it is controlled by the sympathetic and parasympathetic nervous system.The hypothalamus receives the sexual stimuli and cause male sexual arousal and penile response.

The testosterone male hormones which is considered as the androgen responsible for the male sex organ development and secondary sex characteristics at puberty. The increase of circulataing androgen affect the brain areas and responsible for the aggression behavior in males.The high andogen receptor presnt in the medial preoptic area and medial amygdala regulates the male sexual behavior whereas bed nucleus of stria terminalis and septum is responsible for the aggressive behaviour of the male .

The stimulation at the free nerve ending at peniss and gland in males ,convery the sensorial information through dorsal nerve named as relexogenic events.During erection, the vasodilation causes the swollen cavernous body of peniss, triggers the parasympathetic stimulation of pelvic nerve causes nitic oxide release by endothelium.Whereas the sympathetic nervous system causes vasoconstriction, results into peniss detumescence via pelvic,cavernous and pudenda nerves. The reflexogenic and pyschogenic stimuli acts together via parasympathetic system causes erectile functions.Thus the sympathetic and parasympathetic nervous system together causes the effect of orgasm.