How does erection occur?
Erection begins with sexual stimulation. Sexual stimulation can be tactile (for example, by touching the penis), or mental (for example, by having sexual fantasies). Sexual stimulation generates electrical impulses along the nerves going to the penis and causes the nerves to release nitric oxide, which in turn increases the production of cyclic GMP (cGMP) in the smooth muscle cells of the corpora cavernosa. The cGMP causes the smooth muscles of the corpora cavernosa to relax, and allow rapid blood flow into the penis. The in-coming blood fills the corpora cavernosa, making the penis expand.
How is erection sustained?
The pressure from the expanding penis compresses the veins (blood vessels that drain the blood out of the penis) in the tunica albuginea, helping to trap the blood in the corpora cavernosa, thereby sustaining erection. Erection is reversed when cGMP levels in the corpora cavernosa fall, causing the smooth muscles of the corpora cavernosa to contract, stopping the inflow of blood and opening veins that drain blood away from the penis. The levels of the cGMP in the corpora cavernosa fall because it is destroyed by an enzyme called phosphodiesterase type 5 (PDE5)
MALE SEXUAL MEDICATIONS
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Most popular men's sexual health products directory about
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The drugs used to treat erectile disfunction are
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Cialis, commonly mispelled as Cialas, Cialix,
Cyalis, Cailis,
Cealis
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Levitra,
commonly mispelled as Lavetra, Lavitra,
Levetra, Livetra,
Livitra
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Viagra, commonly mispelled as Vagara,
Viagara, Viagera,
Viegra, Vigara
The sexual supplements used to boost sexual desire and penis sixe are
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