_________is a tough, flexible material making up the skeletons or parts of skeletons in vertebrates.
Cartilage
______________ is a gas-filled sac present in that body of many bony fishes, used to maintain and control buoyancy.
Swim Bladder
________________ a large gland that occurs in most birds, opens dorsally at the base of the tail feathers, and usually secretes an oily fluid which the bird uses in preening its feathers
Preen Gland
__________ is a membranous, organ attached to any of various parts of the body of fishes and certain other aquatic animals, used for propulsion, steering, or balancing.
Fin
__________________is any animal whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface
Ecto therms
________________ a structure that closes or covers an aperture such as a gill cover
______________is the system of tactile sense organs, unique to aquatic vertebrates from fish to amphibians, that serves to detect movements and pressure changes in the surrounding water.
Lateral line
_______________ are small soft feathers that cover and insulate the whole body of a bird
Down Feathers
___________________ is a thin layer of cone-shaped tissue that separates the outer ear from the middle ear. IT facilitates hearing by transmitting sound vibrations from the air to the bones.
Tympanic Membrane
Most _________ have long legs and smooth skinds covered in mucus
Frogs
__________________ is a patch of sensory cells within the main nasal chamber that detects heavy moisture-borne odor particles.
Jacobson's organs
_____________ is the ventral side of the turtle shell
Plastron
_________________ any of the milk-producing glands in female mammals, consisting of lobes containing clusters of alveoli with a system of ducts to convey the milk to an external nipple or teat
Mammary Gland
_______________ and _____________ belong to the order of mostly large, predatory, semiaquatic reptiles, known as crocodilians
Crocodiles and Alligators
___________ generally have shorter legs and rougher, thicker skinds
Toads
___________are specialized outgrowths of the skin of birds
Feathers
______________ is the dorsal side of the turtle shell
Carapace
________________as hatching young from eggs, and having a single opening for the digestive, urinary, and genital organs.
Montremes
_____________look like large lizards, have a long spiny crest that runs down the back and a "third eye" on top of their head.
Tuataras
______________typically have movable eyelids, legs with clawed toes and a lower moveable jaw
Lizards
________________________ the veined feathers possessing barbules that chiefly cover the body of a bird and give it a streamlined form
Contour Feathers
________________ are characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield
Turtles
_________________ a distinctive characteristic common to these species is that most of the young are carried in a pouch
Marsupials
___________ are those that maintain a constant body temperature independent of the environment.
Endotherm
___________________have skulls with several more joints than their lizard ancestors, enabling them to swallow prey much larger than their heads with their highly mobile jaws and are legless.
Snakes