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29 Cards in this Set

  • Front
  • Back
lizard's taxonomy
order: squamata.
(iguania and scleroglossa)


IGUANIA
iguanidae: green iguana.
agamiadae: bearded dragon. chemaelonidae: chameleons.
SCLEROGLOSSA
Gekkonidae: geckos.
Amphisbaenidae: worm lizards.
Xantusiidae: night lizards


Just like snakes, they have a 3 chambered heart and 2 aortas. true or false?
true.
They have a renal portal system, why is this important?
renal toxicity with injections caudal to the body.
what do they have in their faces that is used to excrete excess of potassium and sodium?

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