Diaphragm
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Diaphragm may refer to:
Anatomy
- Diaphragm (anatomy), a shelf of muscle extending across the bottom of the ribcage 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
- Iris diaphragm, a variable optical diaphragm
- 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 (mechanics), 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
See also
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