outer shell membrane

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• Shell membrane — The shell membrane of an egg refers to two different parts: the inner shell membrane and the outer shell membrane. The inner membrane is located just between the outer shell membrane and the albumen while the outer shell membrane lies just… …   Wikipedia

• shell — Synonyms and related words: Eustachian tube, L, R, acting area, aim at, alveolation, alveolus, ante up, antrum, anvil, apron, apron stage, armadillo shell, armature, armor, armor plate, armpit, atom, atomic model, attack, auditory apparatus,… …   Moby Thesaurus

• membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m …   Medical dictionary

• shell — /ʃɛl / (say shel) noun 1. a hard outer covering of an animal, as the hard case of a mollusc, or either half of the case of a bivalve mollusc. 2. any of various objects resembling a shell, as in shape, or in being more or less concave or hollow. 3 …  

• shell — An outer covering. cytotrophoblastic s. the external layer of fetally derived trophoblastic cells on the maternal surface of the placenta. diffusion s. a small vessel made of a semipermeable membrane …   Medical dictionary

• Bivalve shell — The bivalve shell is one kind of seashell, and in life it is composed of two parts, two valves. The bivalve shell is part of the body, the exoskeleton, of a bivalve mollusk. Bivalves are a common part of the marine fauna worldwide (scallops,… …   Wikipedia

• Wing shell — Wing Wing, n. [OE. winge, wenge; probably of Scand. origin; cf. Dan. & Sw. vinge, Icel. v[ae]ngr.] [1913 Webster] 1. One of the two anterior limbs of a bird, pterodactyl, or bat. They correspond to the arms of man, and are usually modified for… …   The Collaborative International Dictionary of English

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• Magnesium in biology — Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg2+ ion. It is an essential mineral nutrient for life[1][2][3] and is present in every cell type in every organism. For example, ATP (adenosine… …   Wikipedia

• protist — protistan /proh tis teuhn/, adj., n. protistic, adj. /proh tist/, n. any of various one celled organisms, classified in the kingdom Protista, that are either free living or aggregated into simple colonies and that have diverse reproductive and… …   Universalium

• cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium