| tricuspid orifice | An atrioventricular opening which leads from the right atrium into the right ventricle of the heart. Synonym: ostium atrioventriculare dextrum, ostium venosum cordis. (05 Mar 2000) |
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| external urethral orifice | The slitlike opening of the urethra in the glans penis, the external orifice of the urethra (in the female) in the vestibule, usually upon a slight elevation, the papilla urethrae. Synonym: ostium urethrae externum, external opening of urethra, meatus urinarius, orificium urethrae externum. (05 Mar 2000) |
| ureteric orifice | The opening of the ureter in the bladder, situated one at each lateral angle of the trigone; wide gaping of the ostium usually indicates vesicoureteral reflux. Synonym: ostium ureteris, orificium ureteris, ureteral meatus, ureteral opening. (05 Mar 2000) |
| cerebellar frenulum | A band passing from the longitudinal groove between the quadrigeminal bodies on to the superior medullary velum. Synonym: frenulum veli medullaris superioris, cerebellar frenulum, frenulum cerebelli. (05 Mar 2000) |
| frenulum | <anatomy> A band of tissue which attaches the bottom of the tongue to the floor of the mouth. (07 Apr 1998) |
| frenulum cerebelli | A band passing from the longitudinal groove between the quadrigeminal bodies on to the superior medullary velum. Synonym: frenulum veli medullaris superioris, cerebellar frenulum, frenulum cerebelli. (05 Mar 2000) |
| frenulum clitoridis | The line of union of the inner-laminae portions of the labia minora on the undersurface of the glans clitoridis. Synonym: frenulum clitoridis, frenulum preputii clitoridis. (05 Mar 2000) |
| frenulum epiglottidis | <anatomy> A fold of mucous membrane in the midline that extends from the back of the tongue to the epiglottis, forming the medial boundary of the epiglottic valleculae. Synonym: plica glossoepiglottica mediana, frenulum epiglottidis, middle glossoepiglottic fold. (05 Mar 2000) |
| frenulum labii inferioris | frenulum of lower lip |
| frenulum labiorum minorum | The fold connecting the two labia minora posteriorly. Synonym: frenulum labiorum pudendi, fourchette, frenulum labiorum minorum, frenulum of pudendal lips, frenulum pudendi. (05 Mar 2000) |
| frenulum labiorum pudendi | The fold connecting the two labia minora posteriorly. Synonym: frenulum labiorum pudendi, fourchette, frenulum labiorum minorum, frenulum of pudendal lips, frenulum pudendi. (05 Mar 2000) |
| frenulum linguae | A fold of mucous membrane extending from the floor of the mouth to the midline of the undersurface of the tongue. Synonym: frenulum linguae, frenulum of tongue, vinculum linguae. (05 Mar 2000) |
| frenulum of clitoris | The line of union of the inner-laminae portions of the labia minora on the undersurface of the glans clitoridis. Synonym: frenulum clitoridis, frenulum preputii clitoridis. (05 Mar 2000) |
| frenulum of Giacomini | A slender whitish band, the attenuated anterior continuation of the dentate gyrus (fascia dentata), crossing transversally the surface of the recurved part of the uncus gyri parahippocampalis. Synonym: band of Giacomini, cauda fasciae dentatae, frenulum of Giacomini, tail of dentate gyrus. (05 Mar 2000) |
| frenulum of ileocaecal valve | A fold, more evident in cadavers, running from the junction of the two commissures of the ileocaecal valve on either side along the inner wall of the caecocolic junction. Synonym: frenulum valvae ileocaecalis, frenulum of Morgagni, Morgagni's frenum, Morgagni's retinaculum. (05 Mar 2000) |