Do reptiles have anal openings

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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.

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The creationist expectation of an abrupt transformation from one species to another has been demonstrated: the picture below is of a chicken egg that was cracked open to make a meal, and inside … a dead gecko. A bird giving birth to a reptile? Actually, no, sorry.

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Have you ever stopped to appreciate your anus? Laugh all you want, but this bodily orifice is a highly evolved engineering marvel, and it's hard to imagine life without it. Your anus has a very sensitive job.

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See what I mean? So we try to get serious, to focus, and ask why has no one gotten to the bottom of this particular mystery before? Is it a crappy research topic, or by not addressing it, have other scientists fallen behind?

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Femoral pores in reptiles have several purposes but can also cause a problem for your pet. Along with abdominal, inguinal, and preanal pores, reptiles have a number of glands. They are useful in identifying species and the sex of the reptile, but the pores and their secretions are also still somewhat a mystery.

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Suborder Serpentes i. Amphisbaenia worm lizards Gekkota the geckos Scincomorpha skinks, whiptail lizards and European Lacertid lizards Serpentes the snakes Crocodylomorpha Contains the order Crocodylia which contains the following families Gavialidae the gharial Alligatoridae the alligators and caimans Crocodylidae the crocodiles SNAKES Like the bird, the snake has no diaphragm, so no separate thorax and abdomen. Instead it has a coelomic, or common, body cavity.

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The digestive system is composed of the esophagus, stomach, small intestine, colon, and glands. The esophagus runs adjacent to the air sac from the pharynx, or throat, to the stomach. In mammals, the esophagus is very muscular and moves food to the stomach.

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When a baby's urinary system and the ano-rectal passage fails to separate, this can result in a condition whereby the baby is born without an anus. Photo: Shutterstock. Ano-rectal malformation ARM refers to an abnormality in the formation of the rectum or anus of a newborn.

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Snakes look like legless lizards for a reason -- the two reptiles make up the order Squamatawhich is divided into the suborders Sauria for lizards and Serpentes or Ophidia for snakes. Because of their long shape, snakes' organs are arranged linearly, but they are otherwise similar to those of other vertebrates, including people. The bone-encased brain and sensory organs are contained in the head, and snakes have almost all the senses people do -- with a few interesting modifications:.

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Reptiles are scientifically classified into four groups: crocodiles and alligators Crocodilia ; lizards and snakes Squamata ; turtles and tortoises Testudines ; and tuatara, found only in New Zealand Sphenodontia. The San Antonio River Basin has as high diversity of reptiles that live in a myriad of habitats, including rivers, fields, scrubland and everything in between. May be one scale in snakes possessing a single anal plate or two scales side by side in those snakes possessing a divided anal plate.

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