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20 Cards in this Set

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Vertebrate
Animal that has a vertebral column, or backbone
Cartilage
Strong connective tissue that
supports the body and is softer and more flexible than bone
Lateral Line System
Sensitive receptor system that enables fish to detect gentle currents and vibrations in the water
Swim Bladder
Internal Gas-filled organ in many bony fishes that adjusts their buoyancy
Nicitating Membrane
Movable transparent membrane in amphibians located inside the regular eyelid; protects the surface of the eye from damage under water and keeps it moist on land
Tympanic Membrane
Eardrum of amphibians inside the skull; vibrates in response to sound, allowimg hearing
Ectotherm
Animal that relies on interactions with the environment to help it control body temperature
Feather
Structure made mostly of protein that develops from a pit in a bird's skin
Endotherm
Animal that generates its own body heat and controls its body temperature from within
Crop
In earthworms, part of the digestive system in which food can be stored; in birds, structure at the lower end of the esophagus in which food is stored and moistened
Gizzard
In earthworms, part of the digestive system in which food is ground into smaller pieces; in birds, a muscular organ that helps in the mechanical breakdowm of food
Air Sac
One of several sacs attached to a bird's lungs into which air moves when a bird inhales; allows for the one-way flow of air through the respiratory system
Mammary Glands
Gland in mammals that produces milk to nourish the young
Diaphragm
large, flat muscle at the bottom of the chest cavity that helps with breathing
Monotreme
Egg-laying mammal
Marsupial
Mammal which bears live young that complete their development in an external pouch
Placenta
Organ in placental mammals through which nutrients, oxygen, carbon dioxide, and wastes are exchanged between embryo and mother
Prosimian
Small, nocturnal primate that has large eyes for seeing in the dark
Prehensile
Term used to refer to a long tail that can grasp branches
Opposable Thumb
Thumb that enables grasping objects and using tools