Diaphragm

Look up diaphragm in Wiktionary, the free dictionary.

Diaphragm may refer to any of the following:

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

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

Acoustics

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

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 wall
• Diaphragm arch, a type of arch
• Diaphragm wall, a type of wall
• Diaphragm valve, a type of valve
• Diaphragm (structural system), a structural engineering system used to resist lateral loads

See also

• Lamina
• Membrane

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

This article is licensed under the GNU Free Documentation License. It uses material from Wikipedia