Cold-blooded Flashcards
Vertebrates
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
Endotherm
an animal that is dependent on or capable of the internal generation of heat; a warm-blooded animal.
Ectotherm
an animal that is dependent on external sources of body heat.
Lateral Line
a visible line along the side of a fish consisting of a series of sense organs which detect pressure and vibration.
Gill
the paired respiratory organ of fishes and some amphibians, by which oxygen is extracted from water flowing over surfaces within or attached to the walls of the pharynx.
Jawless fishes (examples)
Agnatha is an infraphylum of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present and extinct species
Cartilaginous fishes (examples)
Chondrichthyes is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage
Bony fishes (examples)
Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue
Swim bladder
The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their current water depth without having to expend energy in swimming.
Lung
a pair of spongy, air-filled organs located on either side of the chest
Tadpole
aquatic larval stage of frogs and toads
Metamorphosis
change of physical form, structure, or substance especially by supernatural means
Caecilians
Caecilians are a group of limbless, vermiform or serpentine amphibians
Salamanders
Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body
Frogs
A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura