Difference between revisions of "Erection - Anatomy & Physiology"
Jump to navigation
Jump to search
| Line 13: | Line 13: | ||
== Erection of the Fibroelastic Penis == | == Erection of the Fibroelastic Penis == | ||
| + | * Bull,Ram and Boar | ||
| + | * Involves increased blood flow with subsequent increase in pressure and simultaneous relaxation of the '''retractor penis muscle'''. | ||
== Erection of the Musculovascular Penis == | == Erection of the Musculovascular Penis == | ||
Revision as of 09:15, 10 July 2008
Introduction
- 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 semen in the female reproductive tract.
- 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.
Erection of the Fibroelastic Penis
- Bull,Ram and Boar
- Involves increased blood flow with subsequent increase in pressure and simultaneous relaxation of the retractor penis muscle.