Look up diaphragm in Wiktionary, the free dictionary.

Diaphragm may refer to: Wikipedia does not have an article with this exact name. ... Wiktionary (from wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ...

Anatomy

• Thoracic diaphragm, a shelf of muscle extending between 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

For other types of diaphragm, see Diaphragm. ... The urogenital diaphragm is an archaic term describing a layer of the pelvis separating deep perineal sac from the upper pelvis. ... The Levator ani and the Coccygeus together form the pelvic diaphragm and are associated with the pelvic viscera. ... The human iris The iris is the green/grey/brown area. ... The tympanic membrane, colloquially known as the eardrum, is a thin membrane that separates the external ear from the middle ear. ... Septa (sing. ...

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
• Iris diaphragm, a variable optical diaphragm
• Diaphragm shutter, a type of optical shutter

A 35mm lens set to f/8; the diameter of the heptagonal diaphragm opening is 4. ... A 35mm lens set to f/8; the diameter of the heptagonal diaphragm opening is 4. ... In photography, a diaphragm shutter is a type of camera shutter (specifically a type of central shutter) consisting of a number of blades which briefly uncover the camera aperture to make the exposure. ...

Acoustics

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

In a loudspeaker, a diaphragm is the thin, semi-rigid membrane attached to the central magnet. ...

Other

• Diaphragm (contraceptive), a small rubber dome placed in the vagina to wall off the cervix, thus preventing sperm from entering
• Diaphragm (mechanical device), a sheet of a semi-flexible material anchored at its periphery
• Diaphragm seal, a membrane that seals an enclosure
• Diaphragm pump, a type of pump
• Diaphragm arch, a type of arch
• Diaphragm wall, a type of wall
• Diaphragm valve, a type of valve
• Diaphragm, typically the floor and/or roof in a structural system, used in Seismic retrofit projects as well as design for new construction.

The diaphragm is a cervical barrier type of birth control. ... In mechanics, a diaphragm is a sheet of a semi-flexible material anchored at its periphery and most often round in shape. ... An example of a diaphragm seal (in green) used to protect a pressure sensor. ... A diaphragm pump is a positive displacement pump that uses a combination of the reciprocating action of a rubber or teflon diaphragm and suitable non-return check valves to pump a fluid. ... A diaphragm arch is a transverse, wall-bearing arch that divides a vault or a ceiling into compartments, providing a kind of firebreak. ... A brick wall A wall is a usually solid structure that defines and sometimes protects an area. ... Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, a diaphragm, and a saddle or seat upon which the diaphragm closes the valve. ... Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. ...

See also

• Lamina
• Membrane

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