Ecdysis is the molting of the cuticula in arthropods and related groups (Ecdysozoa). Since the cuticula of these animals is also the skeletal support of the body and is inelastic, it is shed during growth and a new covering of larger dimensions is formed. In preparation for ecdysis the arthropod will become inactive for a period of time, and then by crawling movements pushes forward in the old integument, which splits down the back allowing the animal to emerge. Often times this initial crack within the integumentary shell will be caused by an increase in blood pressure within the body (in combination with movement), forcing an expansion across its exoskeleton, leading to an eventual crack that allows for certain organisms such as spiders to extricate themselves from. For most organisms, the resting period is used as a stage of preparation in the secretion of fluid from the molting glands of the cellular layer and the loosening of the underpart of the cuticula occurs. Following the shedding of the old cuticula, a new layer is secreted during a second period of inactivity. All cuticular structures are shed at ecdysis, including the terminal linings of the alimentary tract and of the tracheae if they are present. In birds, moulting or molting is the routine shedding of old feathers. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - Trilobites (extinct) Subphylum Chelicerata Arachnida - Spiders, Scorpions, etc. ... The Ecdysozoa are a large group of protostomian animals, erected by Aguinaldo in 1997 primarily based on 18s rRNA data. ... An integument is an outer protective covering such as the feathers or skin of an animal or rind or shell. ... Suborders Araneomorphae Mesothelae Mygalomorphae See the taxonomy section for families Spiders are invertebrate animals that produce silk, have eight legs and no wings. ... For the Physics term GUT, please refer to Grand unification theory The gastrointestinal or digestive tract, also referred to as the GI tract or the alimentary canal or the gut, is the system of organs within multicellular animals which takes in food, digests it to extract energy and nutrients, and... The trachea (IPA /treikiÉ™/), or windpipe, is a tube extending from the larynx to the bronchi in mammals, and from the pharynx to the syrinx in birds, carrying air to the lungs. ...

The molting of reptiles is sometimes called ecdysis. Orders  Crocodilia - Crocodilians  Rhynchocephalia - Tuataras  Squamata   Suborder Sauria - Lizards   Suborder Serpentes - Snakes Testudines - Turtles Superorder Dinosauria  Saurischia  Ornithischia The reptiles are a group of vertebrate animals. ...

Related to the word ecdysis is ecdysiast, a euphemism for a striptease dancer. A euphemism is an expression intended by the speaker to be less offensive, disturbing, or troubling to the listener than the word or phrase it replaces. ... A striptease is a performance, usually a dance, in which the performer gradually removes their clothing for the purposes of sexually arousing the audience, usually performed in nightclubs. ...