trigone


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Related to trigone: Hypoglossal trigone, Vagal trigone

trigone

 [tri´gōn]
2. the first three cusps of an upper molar tooth. adj., adj trigo´nal.
trigone of bladder a triangular region of the wall of the urinary bladder, an area in which the muscle fibers are closely adherent to the mucosa; its three angles correspond with the orifices of the ureters and urethra. Called also vesical trigone.
carotid trigone the triangular area bounded by the posterior belly of the digastric muscle, the sternocleidomastoid muscle, and the anterior midline of the neck. Called also superior carotid triangle.
olfactory trigone the triangular area of gray matter between the roots of the olfactory tract.
vesical trigone trigone of bladder.

tri·gone

(trī'gōn), [TA]
1. Synonym(s): trigonum
2. The first three dominant cusps (protocone, paracone, and metacone), taken collectively, of an upper molar tooth.
[L. trigonum, fr. G. trigōnon, triangle]

trigone

/tri·gone/ (tri´gōn)
2. the first three cusps of an upper molar tooth.

trigone of bladder  vesical t.
carotid trigone  the triangular area bounded by the posterior belly of the digastric muscle, the sternocleidomastoid muscle, and the anterior midline of the neck.
olfactory trigone  the triangular area of gray matter between the roots of the olfactory tract.
vesical trigone  the smooth triangular portion of the mucosa at the base of the bladder, bounded behind by the interureteric fold, ending in front in the uvula of the bladder.

trigone

[trī′gōn]
Etymology: Gk, trigonos, three-cornered
1 a triangular space, especially one at the base of the shoulder.
2 the first three dominant cusps, considered collectively, of an upper molar.

tri·gone

(trī'gōn) [TA]
1. Synonym(s): trigonum.
2. The first three dominant cusps (protocone, paracone, and metacone), taken collectively, of an upper molar tooth.
[L. trigonum, fr. G. trigōnon, triangle]

tri·gone

(trī'gōn) [TA]
First three dominant cusps (protocone, paracone, and metacone), taken collectively, of an upper molar tooth.
[L. trigonum, fr. G. trigōnon, triangle]

trigone

1. a triangular area. See also triangle.
2. the primary three cusps of an upper cheek tooth.

olfactory trigone
the triangular area of gray matter between the roots of the olfactory tract.
vesical trigone
a triangular region of the wall of the urinary bladder, the three angles corresponding with the orifices of the ureters and urethra; it is an area in which the muscle fibers are closely adherent to the mucosa.
References in periodicals archive ?
The buccinator muscle, pterygomandibular raphe, and retromolar trigone are well delineated with cheek distension, and the location of a tumor on the buccal mucosa or gingival mucosa is clearly identified.
Several protocols have specifically injected Botox into the trigone while others specifically avoid trigonal injection for fear of causing reflux.
Embryologically, the vulva, distal vagina, trigone, and urethra are all derived from the urogenital sinus and contain the highest concentration of estrogen receptors.
The trigone is the triangular area of the bladder located between the two ureter openings (tubes that carry urine from the kidney to the bladder) and urethra.
The submucosal tunnels are created by scissor dissection from the original hiatus to the opposite side of the trigone, followed by incising the mucosa at the site of the new mucosal hiatus.
Of the 50 tumors, 24 were located in the tongue, 12 in the oral floor, 7 in the gingiva, 4 in the retromolar trigone, 2 in the buccal mucosa, and 1 in the hard palate (table 1).
However, they involve the trigone and posterior bladder wall in most cases.
Rigid cystoscopy showed a solid looking mass at the trigone, which was a continuous extension from the grossly enlarged right lobe of the prostate.
found that 44% of intraventricular cavernomas were located in the third ventricle, 27% in the lateral ventricle, 20% in the trigone, and 9% in the fourth ventricle.
Areas of fibrosis were scored 2 for each area--soft palate including uvula, right or left anterior faucial pillar including tonsil, right or left buccal mucosa including gingivobuccal sulcus, right or left retromolar trigone, tongue or floor of mouth.
There was a haematoma adjacent to the left trigone which was hyperintense on T1 (Fig.
The level of the fistula was variable and included the bladder neck, trigone and urethra.