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Snake and Lizard Reproduction - Anatomy & Physiology (view source)
Revision as of 08:24, 25 July 2008
, 08:24, 25 July 2008→Phallus
=== Phallus ===
=== Phallus ===
* Two hemipenes
** Paired, sac-like extensions of the cloaca.
* Lie within the ventral tail base.
* Each hemipene has a retractor muscle that extends from the tail vertebrae to the tip and sides of the hemipene.
* Large glands lie above the hemipenes.
* Hemipene retractor muscle and anal glands are all surrounded by a larger propulsor muscle.
* When the hemipene is engorged with blood, the propulsor muscle contracts.
** Everts the hemipene.
* After engorgement has subsided, the retractor muscle contracts.
** Inverts the hemipene.
== Female ==
== Female ==