What is Male Orgasm?
The period of emission and ejaculation is called the male orgasm. Penile erection involves a complex interaction between three systems of the body: the vascular system, the nervous system, and the endocrine system.
Erection
Erection results from dilation of the arteries in the penis and an increase in arterial blood under high pressure -- to simplify things a bit. This causes the erectile tissue in the penis to become engorged. Erection also most likely involves several neurotransmitters.
Orgasm
With increasing intensity of the sexual stimulus, the reflex centers of the spinal cord begin to emit impulses that leave the cord to the genitals and initiate emission, which is the forerunner of ejaculation. Fluid from the vas deferens, the prostate, the ampulla, and the seminal vesicles (and even more tiny glands) are propelled into the internal urethra by contractions of the groin muscles*.
The filling of the internal urethra elicits signals that are transmitted through the pudendal nerves from the spinal cord. Increases in pressure in the urethra cause the semen to be propelled to the exterior, resulting in ejaculation! The period of emission and ejaculation is termed male orgasm. After ejaculation erection ceases within 1 to 2 minutes in most males.
Hormonal Role?
It is apparent that sexual desire and performance depend on some threshold level of testosterone, however, this level varies from man to man. One of the greatest inhibitors of sexual functioning in males is loss of or low self-esteem and the development of a negative self-image.
Bulbocavernous muscles & ischiocavernous muscles. (for those that want to know). Bulbocavernous muscles are at the very base of the penis, the others are deeper in the groin around the penis.
reference: www.coolnurse.com/orgasm
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