CHP 18 Reptiles Flashcards
memorize (34 cards)
Reptiles-non avian are
turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives
Amniotes characteristics
Tough dry skin Amniotic egg Four internal membranes that conserve water, protect and cushion embryo Not dependent on water Embryos are advanced before hatching Pair of kidneys conserve water
Amnion-
fluid-filled cavity- cushioning
Allantois-
stores amniotic waste
Chorion-
Oxygen and CO2 diffusion
Porous shell-
protection
Five ‘groups’Class Reptilia -Reptiles
Testudines Lizards Tuatara Snakes Crocodiles
General Characteristics of Reptiles
Terrestrial Existence
Skin: heavily keratinized, tough, dry, and scaly with few glands
Limb: two pairs with five clawed toes, angled downward
Skeleton: well-ossified, with the well-developed rib cage
Lungs: large and well developed
Circulatory system
functionally divided into pulmonary and systemic
Three (almost four) chambered heart
are they Ectothermic
Ectothermic, but maintain higher body temperature
Internal fertilization
Shelled, amniotic egg
do reptiles have cloaca
yes
homodont
having or being teeth that are all of similar form the porpoise is a animal
Testudines are ?
turtles and
Turtle
Amphibious to freshwater
Paddle-like limbs with webbed toes and low carapace
tortoises
Fully terrestrial
Elephant-like feet
Flexible hinge on plastron that can be tight against the carapace
Many burrow
Tuatara
2 species
Live only on Cook Island and North Island of New Zealand
Complete parietal eye
Mature at 10 years old
Live up to 80+ yrs
Brain and locomotion different from other reptiles
Lizards Characteristics 1
Extremely diverse eaters
Parietal eye
Most have legs
Lizards Characteristics 2
Long and cylindrical body Blunt head with movable eyelids External ear opening Four powerful legs with five toes and long tail Skin is dry and lacks excretory glands
who are Venomous lizards
: Komodo Dragon, Gila monster and Mexican Beaded lizards
Amphisbaenia (worm lizards)
Tail looks like head making them appear like worms
Burrowing and generally rare
Skull modified for digging
Amphisbaenia (worm lizards) move how
Movement by skin moving
Geckos
Toe-pads allow walking on walls and ceiling
Large eyes
Most common lizard
Geckos