orifice


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Related to orifice: Orifice plate, Back Orifice

orifice

 [or´ĭ-fis]
1. the entrance or outlet of any body cavity.
2. any opening or meatus. adj., adj orific´ial.
aortic orifice the opening of the left ventricle into the aorta; called also aortic opening.
external urethral orifice urinary meatus.
internal urethral orifice the opening from the urinary bladder into the urethra at one corner of the trigone of the bladder.
left atrioventricular orifice (mitral orifice) the opening between the left atrium and ventricle of the heart.
pulmonary orifice (orifice of pulmonary trunk) the opening between the pulmonary trunk and the right ventricle of the heart; called also opening of pulmonary trunk.
right atrioventricular orifice (tricuspid orifice) the opening between the right atrium and ventricle of the heart.
ureteral orifice the opening of a ureter into the urinary bladder at one corner of the trigone of the bladder. Called also ureteral meatus.

or·i·fice

(or'i-fis), [TA] Avoid the mispronunciation or'ĭ-fĭ-sēz of the plural of this word.
Any aperture or opening.
See also: aperture, opening, os, ostium, meatus.
Synonym(s): orificium [TA]
[L. orificium]

orifice

/or·i·fice/ (or´ĭ-fis)
1. the entrance or outlet of any body cavity.
2. any opening or meatus.orific´ial

aortic orifice  the opening of the left ventricle into the aorta.
cardiac orifice  see under opening.
external urethral orifice  urinary meatus.
left atrioventricular orifice , mitral orifice the opening between the left atrium and ventricle of the heart.
pulmonary orifice , orifice of pulmonary trunk the opening between the pulmonary trunk and the right ventricle.
right atrioventricular orifice , tricuspid orifice the opening between the right atrium and ventricle of the heart.

orifice

(ôr′ə-fĭs, ŏr′-)
n.
An opening, especially to a cavity or passage of the body; a mouth or vent.

or′i·fi′cial (-fĭsh′əl) adj.

orifice

[ôr′ifis]
Etymology: L, orificium, opening
the entrance or outlet of any body cavity. Also called ostium. orificial, adj.

or·i·fice

(ōr'i-fis) [TA]
Any aperture or opening.
Synonym(s): orificium.
[L. orificium]

orifice

any opening or aperture.

or·i·fice

(ōr'i-fis) [TA]
Any aperture or opening.
[L. orificium]

orifice (ôr´ifis),

n an older term for the opening, entrance, or outlet of any body cavity; any foramen or meatus.

orifice

1. the entrance or outlet of any body cavity.
2. any foramen, meatus or opening.
The names of most orifices are self-defining, e.g. atrioventricular, preputial. See also ostium.

atrioventricular orifice
the opening between the atria and ventricles.
cecocolic orifice
aperture through which the cecum connects with the colon.
ileocolic orifice
the communicating orifice between the ileum and the colon.
infundibular orifice
slit-like orifice at the ovarian end of the avian oviduct; positioned near the ovary so that it can grasp the newly extruded oocyte.
intrapharyngeal orifice
the orifice between the nasopharynx and oropharynx which is bounded by the palatopharyngeal arches.
nasomaxillary orifice
the slit-like opening between the maxillary sinus and the middle meatus of the nasal cavity.
omasoabomasal orifice
large, oval opening at the end of the omasal canal which communicates with the abomasum.
oviductal orifice
a slit-like opening in the avian urodeum.
pyloric orifice
aperture between the stomach and duodenum; opens infrequently, solely for the passage of ingesta.
ureteric orifice
paired orifices in the neck of the bladder.
References in periodicals archive ?
Years of testing show the orifice meter to have a very reproducible and predictable wet gas flow performance.
3) Bilateral duplicated kidneys accompanied by a single ectopic ureteral orifice are extremely rare.
In this study, the flow pattern in the fishway type orifice and weir was stimulated in Karkhe diversion dam (located in Hamidieh) in Khuzestan province.
Typically, when a gate is made smaller you can expect to see a change in plastic pressure because you have reduced the volume of the gate orifice.
eom brand philosophy hinges on identifying emerging neighborhoods, and this new orifice is our follow-through on this vision.
The diameter of LAA orifice; the distances between the orifices of left superior pulmonary veins, left anterior descending (LAD) artery, circumflex artery, mitral valve, oval fossa and LAA orifices were measured.
However, puparia of Icfrealeyrodes species have the submarginal furrow converging inwards and intersecting the area posterior to vasiform orifice, and caudal furrow absent.
Burkert's modular Element system, which is setting new benchmarks for cleanline operation and cost reduction in hygienic process measurement and control, has been expanded to include process valves with orifice diameters up to 50mm (DN 50) and process actuators in sizes up to 130mm.
The first configuration was a two orifice die (Fig.
Reasons include anterior or posterior displacement of the needle tip from the subarachnoid to the epidural space or a flap valve effect in the dura if it is straddled by the needle orifice (1).
A gate valve produced by Vortex Valves has been designed specifically to handle dry bulk solids in gravity flow, dilute phase, or vacuum conveying up to 1 bar, and represents "a significant design innovation" over the company's original Orifice Gate.
March 24, 2011 /PRNewswire-USNewswire/ -- The Natural Orifice Surgery Consortium for Assessment and Research (NOSCAR), a joint effort of the American Society for Gastrointestinal Endoscopy (ASGE) and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES), is pleased to announce that institutions selected to participate in a multicenter human trial on transoral and transvaginal cholecystectomies (gallbladder removal) using Natural Orifice Translumenal Endoscopic Surgery (NOTES) are enrolling patients to take part in the study.