The blood is held in these corporal bodies to produce a firmness called an erection. Latent Phase 2. Tumescence Phase 3. Full Erection Phase 4. Rigid Erection Phase 5.
Erection is essentially a vascular phenomenon which is under neural control.
As described earlier, Impotence could be psychogenic or organic. However, the organic causes could be diseases of lungs, liver, kidneys, nerves, heart, arteries or veins. Broadly, it can be sub-classified into Neurologic, Endocrinologica, Vascular, Drug induced, Iatrogenic, Traumatic and Idiopathic varieties. Diabetes, is one of the most common causes of impotence. The following Diabetes complications may affect a man's ability to achieve and maintain an erection.