Vertebrates 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.
Endotherms
an animal that is dependent on or capable of the internal generation of heat; a warm-blooded animal.
Ectotherms
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.
Gills
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
Agnatha is a superclass of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present and extinct species.
Cartilaginous Fishes
they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone.
Bony Fishes
is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue, as opposed to cartilage.
Swim Bladder
a gas-filled sac present in the body of many bony fishes, used to maintain and control buoyancy.
Amphibians
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. Modern amphibians are all Lissamphibia.
Lungs
The lungs are a pair of spongy, air-filled organs located on either side of the chest (thorax).
Tadpole
A tadpole is the larval stage in the life cycle of an amphibian, particularly that of a frog or toad.
Metamorphosis
the process of transformation from an immature form to an adult form in two or more distinct stages.
Caecilians
Caecilians are a group of limbless, serpentine amphibians.
Salamanders
are a group of amphibians typically characterized by a lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body