penis
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Key facts
- Anatomy.Name
- Penis
- Anatomy.Latin
- penis
- Anatomy.Image
- Penis asiatischer Elefant.JPG
- Anatomy.Caption
- Penis of an Asian elephant
- Anatomy.System
- Reproductive system
via Wikipedia infobox
Article
30 sectionsContents
- Vertebrates
- Birds
- Mammals
- Artiodactyls
- Deer
- Cetaceans
- Perissodactyls
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- Fish and reptiles
- Invertebrates
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- Etymology
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In many animals, a penis (; : penises or penes) is the male sexual organ used to inseminate females (or hermaphrodites) during copulation. Such organs occur in both vertebrates and invertebrates, but males do not bear a penis in every animal species. Furthermore, penises are not necessarily homologous.
The term penis applies to many intromittent organs, but not to all. As an example, the intromittent organ of most Cephalopoda is the hectocotylus, a specialized arm, and male spiders use their pedipalps. Even within the Vertebrata, there are morphological variants with specific terminology, such as hemipenes.