Sex organ of snakes

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Is it possible the unused hemipene helps exert a force on the female's tail that keeps the active one lodged in? I am thinking it could act as a fulcrum. This would be useful for both snakes and lizards. Sean, it's an intriguing idea, but my understanding is that the unused hemipenis isn't involved in mating. When it's not everted, it's just an empty sac like a deflated lung , so it probably couldn't exert much force on anything. The erectile mechanism of hemipenes is similar to that of mammals - the organ must be filled with blood before it becomes useful.
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How to Determine a Snake's Sex

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How do snakes mate? The world of snake sex explained | Metro News

Keywords: anorexia , egg , hemipenes , oviduct , sexual dimorphism. Although anatomy and physiology varies greatly among the diverse class Reptilia, the basic structure of the reproductive tract is fairly consistent. The paired ovaries and testes, which range in color from yellow to grayish-pink, are located dorsomedially within the coelom although their exact location is species-specific. The right gonad sits cranial to the left, particularly in snakes. Females possess a right and left oviduct, but no true uterus. The oviduct empties directly into the cloaca through a genital papillae.
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Why Snakes Have Two Penises and Alligators Are Always Erect

In life there are some big questions that we are longing for an answer to, and today we answer one of the biggest — how do snakes mate? When a female snake is ready to mate she releases a special scent or pheromone from skin glands on her back. The male snake who is ready to mate may catch the scent and follow the trail until he finds the female. Typical flirting then ensues once he locks eyes on the female snake — he will court the female by bumping his chin on the back of her head and crawling over her.
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A hemipenis plural hemipenes is one of a pair of intromittent organs of male squamates snakes , lizards and worm lizards. They come in a variety of shapes, depending on species, with ornamentation, such as spines or hooks. The hemipenis is the intromittent organ of squamata, which is the second largest order of vertebrates with over species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals , archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. Much debate continues regarding the evolutionary origin of hemipenes and their relationship to the intromittent organs of other species.
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