animal membrane

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• membrane — [ mɑ̃bran ] n. f. • v. 1370; lat. membrana, de membrum « membre » 1 ♦ Anat. Mince couche de tissu qui enveloppe un organe, qui tapisse une cavité ou un conduit naturel (⇒ muqueuse). Fine membrane. ⇒ pellicule. Membranes muqueuses, séreuses,… …   Encyclopédie Universelle

• membrane — Membrane. s. f. Partie mince, deliée & nerveuse du corps de l animal, servant d enveloppe aux autres parties. Les membranes du corps. les fibres d une membrane. la membrane qui enveloppe le muscle. piquer la membrane, les membranes des muscles.… …   Dictionnaire de l'Académie française

• ANIMAL (RÈGNE) - Évolution animale — La notion d’histoire du règne animal est relativement récente dans la pensée scientifique. Après la Renaissance, les premiers naturalistes cherchaient seulement à mettre de l’ordre dans nos connaissances en comparant les caractères des divers… …   Encyclopédie Universelle

• membrane — [mem′brān΄] n. [L membrana, membrane, fine skin, parchment < membrum,MEMBER] 1. a thin, soft, pliable sheet or layer, especially of animal or vegetable tissue, serving as a covering or lining, as for an organ or cell 2. any thin, flexible… …   English World dictionary

• animal development — Introduction  the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …   Universalium

• Membrane potential — Differences in concentration of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Many ions have a concentration gradient across the membrane, including potassium (K+), which is at a high inside and a… …   Wikipedia

• animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …   Universalium

• Animal virology — The study of animal viruses is important from a veterinary viewpoint and many of these viruses cause diseases that are economically devastating. Many animal viruses are also important from a human medical perspective. The emergence of the SARS… …   Wikipedia

• Membrane transport — In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes namely lipid bilayers that contain proteins embedded in them …   Wikipedia

• Membrane nanotube — Not to be confused with nanotube membrane. Membrane nanotubes, membrane nanotubules or cytonemes are long and thin tubes formed from the plasma membrane that connect different animal cells over long distances.[1] Two types of nanotubes have been… …   Wikipedia

• Animal echolocation — Echolocation, also called biosonar, is the biological sonar used by several animals such as dolphins, shrews, most bats, and most whales. The term was coined by Donald Griffin, who was the first to conclusively demonstrate its existence in bats.… …   Wikipedia