chapter 3 Flashcards
(30 cards)
characteristics of amphibians
moist thin skin with no scales
feet
use gills, lungs, and skin in respiration
external fertilization
oviparous
change from aquatic larval to terrestrial adult through metamorphosis
what does amphibian mean
double life, because amphibians spend their early life stages in water and their adulthood on land.
two important functions skin serves
respiration and protection
chambers in heart
3
double loop circulatory system
faster blood flow to the body
pulmonary circulation
type of circulation that involves the heart and lungs
systemic circulation
type of circulation that involves the heart and body
two ways amphibians can respire
through the lungs and through the skin
pulmonary respiration
respiration through the lungs
cutaneous respiration
respiration through the skin
digestive system type
simple stomach
primary excretory organs
kidneys
what part of brain is much larger in amphibians then fish
olfactory lobes (sense of smell)
nictitating membrane
transparent, moveable membrane that covers the eyes allowing for protection, and sight
tympanic membrane
eardrums of amphibians
amplexus
reproductive embrace of amphibians where the male latches on to females back until she releases her eggs
amphibians lay eggs, which meand they are?
oviparous
metamorphosis
process of change in an amphibians life cycle from tadpole to adult
what young are called in their aquatic stage of life
tadpoles
type of thermoregulation
ectothermic, they depend on their external environment to adjust their body temp
what order includes frogs and toads
anura
what order includes salamanders and newts
caudata
what order is only cecilians?
gymnophiona
frog and toads characteristics
body adapted for jumping
long legs
short spine
strong limbs
