Anatomy Of An Erection

The urethra the tube that urine and semen flow through runs along the underside of them in the spongy tissue of the corpus spongiosum. An erection begins with sensory and mental stimulation.

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Anatomy of the erect penis.

Anatomy of an erection. The corpus spongiosum in the middle of the penis houses the urethra the opening at the end of the penis through which a man urinates and ejaculates. During sexual arousal nerve messages begin to stimulate the penis. They have a maze of blood vessels tissue and open pockets.

This chain reaction lets you achieve and maintain an erection. Stage 1 filling with blood. Upon stimulation the arteries within the penis relax and blood flows into the penis at more than 20 times the normal rate.

Impulses from the brain and local nerves cause the muscles of the corpora cavernosa to relax allowing blood to flow in and fill the open spaces. The key to an erection lies within the male brain through visual auditory or imagined stimuli or through manual stimulation. Psychogenic erection is a result of audiovisual stimuli or fantasy.

Two main arteries one in each of the corpora cavernosa and several veins move blood in and out. During erection the ridged band forms ridges that go all the way around about halfway down the shaft. The veins get compressed trapping blood in your penis.

Impulses from the brain modulate the spinal erection centers t 11 l 2 and s 2 s 4 to activate the erectile process. There are five stages involved in the erection. Here i have explained the anatomy of the human male reproductive system organs and that includes penis anatomy as well as anatomy of testicles scrotum urethra and vas deferens.

There is also a network of tissues muscles arteries and veins running through the penis which allows it to fill with blood and stiffen for an erection. Reflexogenic erection is produced by tactile stimuli to the genital organs. The blood enters faster than it can leave through the veins.

Anatomy of a penis. The reddish or purplish glans or glans penis head of the penis is smooth shiny moist and extremely sensitive. As a result of sexual andor psychological stimulation impulses from the brain and nerves around the penis cause the smooth muscles to relax allowing blood to fill the corporal bodies.

So basic biology an erection is a hormonal response to stimuli that creates a rapid blood flow to the penis which in turns compresses the veins resulting in the erection. There is a bit of mystery that surrounds the average erection.

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