"cold-blooded" not internally regulated. Body temperature varies with the environment.
Producing eggs in which the embryo develops outside the female's body.
Associated with a malformation of the gyri in the cerebral cortex. In dogs, it is associated with behavioral abnormalities, visual deficits, ataxia, and seizures.
Associated with the group of snakes with hollow fangs that are venomous but not agressive.
Organ: thin sacs situated on either side of the nasal septum, which is accessible via a pit in the roof of the mouth, part of the olfactory system.
Instead of eyelids, snakes have these modified scales that cover the eyes, also called brille.
Skulls of various reptiles (snakes, lizards, crocodiles) with two pairs of temporal openings behind each eye.
Saclike projections from the posterior cloaca of male snakes and lizards, which together act as a penis and are inserted into the cloaca of the female.
Giving birth to live young that develop within the maternal body.
Skulls of primitive reptiles (all extinct except turtles) that have no openings in the temporal region.
Down
Dentition in which the teeth are fused to the biting edge of the mandible and maxillae, found in some species of lizards
Part of the epithalamus: usually associated with the pineal gland: may be photoreceptive in some species and is associated with the endocrine system. Found in lizards and snakes. Also referred to as the third eye.
Having hinged, hollow fangs that fold back when the mouth is closed, includes vipers, and rattlesnakes.
Phagocytic white blood cell equivalent to the mammalian neutrophil.
Shedding of skin in reptiles.
Referring to having solid teeth, without a groove for venom (used to classify snake groups).
The ventral shell of turtles and tortoises.
Organ: undeveloped ovaries located anterior to the testes in male toads. Environmental and physiologic influences enable the male to become female.
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It prints on two pages.
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