keratinous layer

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• Scelidosaurus — Taxobox name = Scelidosaurus fossil range = Early Jurassic image width = 250px image caption = Scelidosaurus regnum = Animalia phylum = Chordata classis = Sauropsida superordo = Dinosauria ordo = Ornithischia subordo = Thyreophora infraordo =… …   Wikipedia

• perissodactyl — perissodactylous, adj. /peuh ris oh dak til/, adj. 1. having an uneven number of toes or digits on each foot. n. 2. any mammal of the order Perissodactyla, comprising the odd toed hoofed quadrupeds and including the tapirs, rhinoceroses, and… …   Universalium

• skin disease — ▪ pathology Introduction  any of the diseases or disorders that affect the human skin. They have a wide range of causes. General features       Although most diseases affecting the skin originate in the layers of the skin, such abnormalities are… …   Universalium

• Pterosaur — Pterosaurs Temporal range: Late Triassic–Late Cretaceous, 220–65 Ma …   Wikipedia

• hair — hairlike, adj. /hair/, n. 1. any of the numerous fine, usually cylindrical, keratinous filaments growing from the skin of humans and animals; a pilus. 2. an aggregate of such filaments, as that covering the human head or forming the coat of most… …   Universalium

• reptile — reptilelike, adj. reptiloid /rep tl oyd /, adj. /rep til, tuyl/, n. 1. any cold blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the… …   Universalium

• Cyst — A closed sac or capsule, usually filled with fluid or semisolid material. * * * 1. A bladder. 2. An abnormal sac containing gas, fluid, or a semisolid material, with a membranous lining. SEE ALSO: pseudocyst. [G. kystis, bladder] adventitious c.… …   Medical dictionary

• Moulting — Cicada molting In biology, moulting or molting[1] (both pronounced /ˈmoʊltɪŋ/), also known as sloughing, shedding, or for some species, ecdysis, is the manner in which an animal routinel …   Wikipedia

• Skin neoplasm — Skin cancer Classification and external resources A basal cell carcinoma. Note the pearly appearance and telangiectasia. ICD 10 C …   Wikipedia

• Skin cancer — ICD9|173 ICDO = 8010 8720 OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D012878 Skin cancer is a malignant growth on the skin which can have many causes. Skin cancer generally develops in the epidermis (the outermost layer of… …   Wikipedia

• Beak — For other uses, see Beak (disambiguation). Comparison of bird beaks, displaying different shapes adapted to different feeding methods. Not to scale. The beak, bill or rostrum is an external anatomical structure of birds which is used for eating… …   Wikipedia