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29 Cards in this Set
- Front
- Back
lizard's taxonomy
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order: squamata.
(iguania and scleroglossa) |
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IGUANIA
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iguanidae: green iguana.
agamiadae: bearded dragon. chemaelonidae: chameleons. |
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SCLEROGLOSSA
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Gekkonidae: geckos.
Amphisbaenidae: worm lizards. Xantusiidae: night lizards |
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Just like snakes, they have a 3 chambered heart and 2 aortas. true or false?
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true.
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They have a renal portal system, why is this important?
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renal toxicity with injections caudal to the body.
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what do they have in their faces that is used to excrete excess of potassium and sodium?
hint: they sneeze. |
"nasal salt glands"
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lizards do not have a diaphragm. true or false?
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True.
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what is the difference in the lungs between a primitive lizard and an advanced lizard?
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The primitive lizard's lungs are hollow, the advanced lizard's lungs are interconnected by a septae.
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most lizards are pleurodont. what does this mean?
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attached to the medial side of the jaws; regularly shed/replaced.
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the chameleon is not pleurodont, what is it?
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is acrodont. it means teeth attached to the biting edge of the jaw; not shed/replaced
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Give 2 examples of venomous spp.
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Gila monster and Mexican bearded lizard.
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Where are the venomous glands located?
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sublingual. FYI their teeth are not hollow.
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Do they have a vomeronasal organ just like snakes?
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Yes, the Jacobson organ.
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Their stomach is simple and J shaped. True or false?
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True
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They have a coprodeum, uredeum, and proctodeum. Where is the cloacal slit?
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in lizards, is transverse.
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colonic obstruction can result in...
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nephromegaly.
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Do lizards have a loop of Henle?
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no
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Do lizards have bladders?
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Yes! they are different from snakes, snakes do not have one.
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nitrogenous waste could be...
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Urea, uric acid, or ammonia.
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They have a hemipenis (like snakes), do they use both in copulation?
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No, only one of them is used.
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when reproducing, females can be...
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oviviparus, ovoviviparus, viviparus, or partogenic.
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two ways of sexing a lizard.
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males are sexually dimorphic (ornaments, colors).
males' pre cloacal pores are larger than in females. |
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the tail can regenerate if is cut off, what is it regenerated with?
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cartilaginous rod for support.
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they are chromatopores, what does this mean?
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rapid color changes due to stimulation (environment, weather, temperature)
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the dermal bony plates are called...
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osteoderms
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their cerebrum and cerebelum are larger than fish and amphibian. Is still very small compared to body weight (less than 1%), true or false?
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true.
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How different is the spinal cord of lizards and mammals?
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The lizards' spinal cord goes all the way to the tip of the tail.
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Similar to snakes, what organ control ecdysis?
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the thyroid gland.
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what do the parathyroid glands control?
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plasma calcium and phosphorus levels.
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