Erection

Erection is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Erections result from a complex series of events, involving signals from the nervous system and the release of chemical messengers within the tissues of the penis.

Physiology

The process of erection begins with sensory or mental stimulation, or both. 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 blood creates pressure in the corpora cavernosa, making the penis expand. The tunica albuginea helps trap the blood in the corpora cavernosa, thereby sustaining the erection.

Erection and Age

Erection changes can mark the end of sex or a new erotic beginning. When men reach their 50s and 60s, the force and hardness of an erection can be weaker and not as firm as it was at a younger age. However, sexual activity can still be enjoyed with the help of medications and other treatments.

Erectile Dysfunction

Erectile dysfunction (ED) is the inability to get or keep an erection firm enough for sexual intercourse. ED can be a sign of health problems that need treatment. It can also be a sign of emotional or relationship difficulties that may need to be addressed by a professional.

Treatment

There are many treatments for erectile dysfunction, including medications such as sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra). Other treatments include lifestyle changes, such as quitting smoking, losing weight, and increasing physical activity. In some cases, surgery may be an option.

See Also

• Erectile dysfunction
• Penis
• Corpora cavernosa
• Sildenafil
• Tadalafil
• Vardenafil

Erection Resources
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