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diaphragm    音标拼音: [d'ɑɪəfr,æm]
n. 横隔膜,控光装置

横隔膜,控光装置

diaphragm
n 1: a mechanical device in a camera that controls size of
aperture of the lens; "the new cameras adjust the diaphragm
automatically" [synonym: {diaphragm}, {stop}]
2: (anatomy) a muscular partition separating the abdominal and
thoracic cavities; functions in respiration [synonym:
{diaphragm}, {midriff}]
3: a contraceptive device consisting of a flexible dome-shaped
cup made of rubber or plastic; it is filled with spermicide
and fitted over the uterine cervix [synonym: {diaphragm},
{pessary}, {contraceptive diaphragm}]
4: electro-acoustic transducer that vibrates to receive or
produce sound waves

Diaphragm \Di"a*phragm\, n. [L. diaphragma, Gr. ?, fr. ? to
fence by a partition wall; dia` through ?, ?, to fence,
inclose; prob. akin to L. fareire to stuff: cf. F.
diaphragme. See {Farce}.]
1. A dividing membrane or thin partition, commonly with an
opening through it.
[1913 Webster]

2. (Anat.) The muscular and tendinous partition separating
the cavity of the chest from that of the abdomen; the
midriff.
[1913 Webster]

3. (Zool.) A calcareous plate which divides the cavity of
certain shells into two parts.
[1913 Webster]

4. (Opt.) A plate with an opening, which is generally
circular, used in instruments to cut off marginal portions
of a beam of light, as at the focus of a telescope.
[1913 Webster]

5. (Mach.) A partition in any compartment, for various
purposes.
[1913 Webster]

{Diaphragm pump}, one in which a flexible diaphragm takes the
place of a piston.
[1913 Webster]

128 Moby Thesaurus words for "diaphragm":
IUD, abdomen, abomasum, acoustical network, bag, barrier,
bay window, beerbelly, belly, birth control device, brattice,
breadbasket, buffer, buffer state, bulkhead, bumper,
capacitor speaker, center, cloison, coaxial speaker, collision mat,
condom, cone, contraceptive, contraceptive foam, core, craw, crop,
crossover network, cushion, diameter, dissepiment, dividing line,
dividing wall, division, dynamic speaker, earphone,
electrodynamic speaker, electromagnetic speaker,
electrostatic speaker, embonpoint, equator, excited-field speaker,
fender, first stomach, full-fidelity speaker, gizzard, gullet, gut,
headphone, headset, heart, high-fidelity speaker,
high-frequency speaker, honeycomb stomach, horn, interior,
interseptum, intrauterine device, kernel, kishkes, loudspeaker,
low-frequency speaker, manyplies, mat, maw, mean, median, middle,
midmost, midrange speaker, midriff, midsection, midst,
monorange speaker, moving-coil speaker, nucleus, omasum,
oral contraceptive, pad, panel, paries, partition, party wall,
paunch, permanent magnet speaker, pessary, pot, potbelly, potgut,
property line, prophylactic, psalterium, pusgut, rennet bag,
reticulum, rubber, rumen, second stomach, separation, septulum,
septum, shock pad, skin, spare tire, speaker, speaker system,
speaker unit, spermicidal jelly, spermicide, stomach, swagbelly,
the pill, thick, thick of things, third stomach, triaxial speaker,
tum-tum, tummy, tweeter, underbelly, ventripotence, voice coil,
waist, waistline, wall, woofer, zone


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  • Diaphragm | Definition, Function, Location | Britannica
    Diaphragm, dome-shaped, muscular and membranous structure that separates the thoracic and abdominal cavities in mammals; it is the principal muscle of respiration
  • What is the Diaphragm? Related Conditions - Cleveland Clinic
    The diaphragm plays a critical role in the respiratory system When you breathe in, your diaphragm contracts (tightens) and flattens, moving down towards your abdomen
  • Thoracic diaphragm - Wikipedia
    While the diaphragm is one muscle, it is composed of two distinct muscle regions: the costal, which serves as the driver in the work of breathing, and crural diaphragm, which serves as an "anchor;" attaching the muscle to the lower ribs and lumbar vertebrae
  • How the Diaphragm Works: From Anatomy to Breathing
    The diaphragm is a sheet of skeletal muscle situated at the base of the chest, serving as the primary engine for the body’s respiratory system This muscle separates the thoracic cavity, containing the heart and lungs, from the abdominal cavity below
  • Diaphragm - Structure, Function Location
    The diaphragm is a dome-shaped, musculotendinous structure that acts as the primary muscle of respiration It separates the thoracic cavity from the abdominal cavity and contracts rhythmically and involuntarily to facilitate breathing
  • The Diaphragm - Actions - Innervation - TeachMeAnatomy
    The diaphragm is a double-domed sheet of skeletal muscle, located at the inferior-most aspect of the rib cage It separates the thoracic cavity from the abdominal cavity
  • Diaphragm: Overview and Practice Questions (2026)
    What Is the Diaphragm? The diaphragm is a dome-shaped sheet of skeletal muscle located beneath the lungs, separating the thoracic cavity from the abdominal cavity Despite its simple appearance, this muscle is one of the most vital structures in the human body
  • mymedschool. orgU01. 16. 009 Diaphragm structures
    Learning Objectives Master the anatomical levels and structures that perforate the Diaphragm Memorize the high-yield “Red, White, and Blue” mnemonic for T12 and understand the clinical significance of phrenic nerve innervation for the USMLE Step 1





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