Look up membrane in Wiktionary, the free dictionary.

In medicine, microbiology, cellular physiology and biochemistry a membrane is a lipid bilayer that acts as a boundary to various cellular structures, and can refer to: Wikipedia does not have an article with this exact name. ... Wiktionary is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ...

• Basement membrane, the combination of the basal lamina and lamina reticularis or of two basal laminae
• Biological membrane
  • Cell membrane
  • Endomembrane system that divides the cell into organelles
  • Outer membrane or inner membrane of an organelle
  • S-layer, a cell membrane of bacteria
• Mucous membrane

• Serous membrane and mesothelium that surround organs, including:
  • Peritoneum that lines the abdominal cavity
  • Pericardium that surrounds the heart
  • Pleura that surround the lungs
  • Periosteum, membrane that surrounds bone
  • The meninges that surround the brain: the dura mater, arachnoid mater, and the pia mater
• Skin, part of the integumentary system

Membrane may also refer to: ... A biological membrane or biomembrane is a membrane which acts as a barrier within or around a cell. ... Image:CellWallDrawing. ... The endomembrane system is the system of internal membranes within eukaryotic cells that divide the cell into functional and structural compartments, or organelles. ... Mitochondria structure : 1) Inner membrane 2) Outer membrane 3) Crista 4) Matrix The outer membrane refers to the outside membranes of Gram-negative bacteria, the chloroplast, or the mitochondria. ... The inner membrane is a membrane (phospholipid bilayer) of an organelle that is within the outer membrane. ... An S-layer is a membrane commonly found in gram-positive and gram-negative bacteria, as well as among Archaea. ... The mucous membranes (or mucosae; singular: mucosa) are linings of ectodermic origin, covered in epithelium, and are involved in absorption and secretion. ... A serous membrane is a very thin layer of cells (usually one row) covering internal body cavity. ... The mesothelium is a membrane that forms the lining of several body cavities: the pleura (thoracal cavity), peritoneum (abdominal cavity) and pericardium (heart sac). ... In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ... The pericardium is a double-walled sac that contains the heart and the roots of the great vessels. ... In anatomy, the pleural cavity is the potential space between the lungs and the chest wall. ... The periosteum is an envelope of fibrous connective tissue that is wrapped around the bone in all places except at joints (which are protected by cartilage). ... The meninges (singular meninx) are the system of membranes that envelop the central nervous system. ... The dura mater (from the Latin hard mother), or pachymeninx, is the tough and inflexible outermost of the three layers of the meninges surrounding the brain. ... The Arachnoid mater is one of the three layers of the meninges, interposed between the dura mater and the pia mater and separated from the pia mater by the subarachnoid space. ... [www. ... In zootomy and dermatology, skin is an organ of the integumentary system made up of multiple layers of epithelial tissues that guard underlying muscles and organs. ...

• Artificial, semipermeable membranes which are used to separate species in a fluid on the basis of size, charge or other characteristics. Such membranes are employed in a range of applications from water and wastewater treatment (see reverse osmosis, nanofiltration, ultrafiltration and microfiltration) to hydrogen fuel cells (see proton exchange membrane).
• The Membranes - an English post-punk band
• Branes, in string theory

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