| A | B |
|---|
| scales | keratin structures produced by the epidermis that overlap and lie on the surface of the skin |
| scutes | Bone-like structures produced by the dermis that do not overlap and lie on the surface of the skin. |
| amnion | The inner membrane of an egg that contains the fluid to provide protection from mechanical shock, abrasion (rubbing), and dehydration |
| venom | a toxin or poison that is produced to be injected into prey or and enemy by a bite or sting |
| incubation | the process of keeping eggs warm |
| plumage | all the feathers of a bird, including their types, coloration, and arrangement |
| diphyodonty | The condition in which a set of primary teeth is later replaced by a secondary set |
| placenta | a structure inside the mother that provides developing young with oxygen and nutrients and removes carbon dioxide and waste |
| Monotreme | an animal that lays eggs and lactates |
| bird | an animal that produces a hard-shelled amniotic egg |
| constrictor | an animal that is covered in scales and kills its prey by suffocation |
| lizard | an animal that is ectothermic, covered in scales, and has an external ear |
| marsupial | an animal with hair that gives birth to live young that are poorly developed |
| tortoise | an animal with scutes and a shell that spends almost all of its life on land |
| dinosaurs | The animals from which evolutionists think birds evolved from |
| gyri and sulci | ridges and grooves in the cerebrum and cerebellum of mammals and no other animals |
| Jacobson's organ | analyzes the chemical nature of particles taken in on the tongue to sense its environment |
| tuataras | belong to order Sphenodontia |
| keratin | a protective protein found in scales, hair, and nails |
| epidermis | the outermost layer of skin |
| dermis | the layer of skin that underlays the outermost layer of skin |
| albumen | the clear liquid in an amniotic egg that provides nutrition, cushioning, and protection from microbes |
| albumin | a protein found in the albumen of an amniotic egg |
| Order Crocodilia | the order that includes crocodiles, alligators, caimans, and gharials |
| Order Sphenodontia | the order that contains tuataras as its only extant genus |
| Order Squamata | the order that includes lizards and snakes |
| Order Testudines | the order that includes turtles, tortoises, and terrapins |
| prehensile | the term given to the ability of lizards to grasp things with their tails |
| carapace | the upper portion of the shell of testudines |
| plastron | the lower portion of the shell of testudines |
| ornithology | the study of birds |
| flippers | specialized wings for swimming |
| talons | powerful, long claws birds use to capture prey |
| crop (craw) | the structure that birds use to store food before it is digested |
| gizzard | the structure in birds that grind food |
| rachis | the area where the vane attaches to either side of the central shaft of a feather |
| preening | the process of reconnecting barbules that have come apart |
| downy feathers | feathers with a very short rachis and few barbules |
| sternum | the breastbone of birds |
| furcula | the bone in birds that prevent the body from twisting or breaking during movement of the wings. AKA wishbone |
| raptors | the term given to birds of prey |
| syrinx | the vocal organ or "song box" in birds |
| cerebrum | the part of the brain that controls how an animal processes information from the environment |
| cerebellum | the part of the brain that coordinates how muscles work together |
| brainstem | connects the brain to the rest of the body and regulates breathing and heart beats |
