Diaphragm

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Diaphragm may refer to:

[edit] Anatomy

• Thoracic diaphragm, a sheet of muscle separating the thorax and abdomen of mammals
• Urogenital diaphragm, a layer of the pelvis separating deep perineal sac from the upper pelvis
• Pelvic diaphragm, a pelvic muscle consisting of the Levator ani and the Coccygeus
• A number of structures that act as diaphragms, including the iris and the eardrum
• Any dividing structure; for example, in gasteromycetes and bryozoans, with a sense similar to that of septum

[edit] Optics and photography

• Diaphragm (optics), a stop in the light path of a lens, having an aperture that regulates the amount of light that passes
• Diaphragm shutter, a type of optical shutter

[edit] Acoustics

• Diaphragm (acoustics), a thin, semi-rigid membrane that vibrates to produce or transmit sound waves.

[edit] See also

• Lamina
• Membrane

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