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| == Erection == | | == Erection == |
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− | When sexual receptivity of the female is established and sufficient arousal is accomplished in the male, erection and protrusion of the penis ensue. Successful penile erection requires a complex series of neural and vasomotor reactions. Erection of the penis is necessary for copulation and deposition of [[Copulation_-Sperm_in_the_Female_Tract_-_Anatomy_%26_Physiology|semen in the female reproductive tract]]. | + | |
| + | == Introduction == |
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| + | * When sexual receptivity of the female is established and sufficient arousal is accomplished in the male, erection and protrusion of the penis ensue. |
| + | * Successful penile erection requires a complex series of neural and vasomotor reactions. |
| + | * Erection of the penis is necessary for copulation and deposition of [[Copulation_-Sperm_in_the_Female_Tract_-_Anatomy_%26_Physiology|semen in the female reproductive tract]]. |
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| + | * Erection is characterized by a marked increase in rigidity of the penis. |
| + | * Increased rigidity is the result of increase in arterial inflow of blood compared to venous outflow. |
| + | * Erection requires that blood be trapped within the cavernous sinus of the penis. |
| + | * Increased blood flow to the penis is brought about by vasodilation of the arterioles supplying it. |
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| + | == Erection of the Fibroelastic Penis == |
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| + | == Erection of the Musculovascular Penis == |
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| == Penile Protrusion == | | == Penile Protrusion == |