Membrane

Encyclopedia : M : ME : MEM : Membrane

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:

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:

Artificial membrane/Semipermeable membrane allowing certain molecules or ions to pass through it
*Proton exchange membrane, designed to conduct protons while being impermeable to gasses
Branes, in string theory

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