Cuticle
51primary cuticle — a film on the enamel of unerupted teeth, considered to be the final product of degenerating ameloblasts after completion of enamel formation; electron microscopy shows it to consist primarily of ameloblasts of the reduced enamel epithelium… …
52secondary cuticle — cuticula dentis …
53КУТИКУЛА — (cuticle) 1. Эпидермис кожи. 2. Слой твердого или полутвердого вещества, покрывающий эпителий; секретируется клетками кожи (особенно развита в покровах беспозвоночных животных ред.). 3. Наружный слой клеток, покрывающий кору волоса …
54cuticular — cuticle ► NOUN 1) dead skin at the base of a fingernail or toenail. 2) the epidermis of the body. 3) a protective layer covering the epidermis of a plant or invertebrate. DERIVATIVES cuticular adjective. ORIGIN from Latin cuticula little skin …
55skeleton — skeletonless, adj. skeletonlike, adj. /skel i tn/, n. 1. Anat., Zool. the bones of a human or an animal considered as a whole, together forming the framework of the body. 2. any of various structures forming a rigid framework in an invertebrate.… …
56insect — insectival /in sek tuy veuhl/, adj. /in sekt/, n. 1. any animal of the class Insecta, comprising small, air breathing arthropods having the body divided into three parts (head, thorax, and abdomen), and having three pairs of legs and usually two… …
57integument — /in teg yeuh meuhnt/, n. 1. a natural covering, as a skin, shell, or rind. 2. any covering, coating, enclosure, etc. [1605 15; < L integumentum a covering. See IN 2, TEGUMENT] Syn. 1. cortex, involucre, involucrum. * * * Covering of the body,… …
58Arthropod — Temporal range: 540–0 Ma …
59Ecdysis — For other uses, see Ecdysis (disambiguation). Series of pictures showing the progression of ecdysis in Callinectes sapidus, the blue crab Ecdysis (from Ancient Greek: ἐκδύω – ekduo – to take off, strip off …
60Arthropod exoskeleton — Arthropods are covered with a tough or resistant exoskeleton, which may be mineralised or constructed of a tough polymer such as chitin. This external skeleton is moulted as the organism grows.Microscopic structureA typical arthropod exoskeleton… …
