frenulum

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frenulum

 [fren´u-lum] (pl. fren´ula) (L.)
a small fold of integument or mucous membrane that limits the movements of an organ or part.
frenulum of clitoris a fold formed by union of the labia minora on the undersurface of the clitoris.
frenulum of ileocecal valve a fold formed by the joined extremities of the ileocecal valve, partially encircling the lumen of the colon.
frenulum labio´rum puden´di fourchette.
frenulum lin´guae frenulum of tongue.
frenulum of lip a median fold of mucous membrane connecting the inside of each lip to the corresponding gum.
frenulum of prepuce of penis a fold under the penis connecting it with the prepuce.
frenulum of pudendal labia the posterior junction of the labia minora; called also fourchette.
frenulum of superior medullary velum a band lying in the superior medullary velum at its attachment to the inferior colliculi.
frenulum of tongue the vertical fold of mucous membrane under the tongue, attaching it to the floor of the mouth; called also frenulum linguae.

fren·u·lum

, pl.

fren·u·la

(fren'yū-lŭm, -lă), [TA]
A small frenum or bridle.
See also: frenum.
Synonym(s): habenula (1) [TA]
[Mod. L. dim. of L. frenum, bridle]

frenulum

/fren·u·lum/ (fren´u-lum) pl. fren´ula   [L.] a small fold of integument or mucous membrane that limits the movements of an organ or part.
frenulum of clitoris  a fold formed by union of the labia minora with the clitoris.
frenulum of ileocecal valve  a fold formed by the joined extremities of the ileocecal valve, partially encircling the lumen of the colon.
frenulum of lip  a median fold of mucous membrane connecting the inside of each lip to the corresponding gum.
frenulum of prepuce of penis  the fold under the penis connecting it with the prepuce.
frenulum of pudendal labia , frenulum puden´di the posterior union of the labia minora, anterior to the posterior commissure.
frenulum of superior medullary velum  a band lying in the medullary velum at its attachment to the inferior colliculi.
frenulum of tongue  the vertical fold of mucous membrane under the tongue, attaching it to the floor of the mouth.

frenulum

(frĕn′yə-ləm)
n. pl. frenu·la (-lə)
1. Anatomy A small frenum.
2. Entomology A bristly structure on the hind wings of certain moths and butterflies that holds the forewings and hind wings together during flight.

frenulum

See frenum.

frenulum

A thin strip of mucocutaneous tissue on the underside of the penis which connect the shaft to the head.

fren·u·lum

, pl. frenula (fren'yū-lŭm, -lă) [TA]
A small frenum or bridle.
Synonym(s): habenula (1) [TA] , frenum (3) .
[Mod. L. dim. of L. frenum, bridle]

frenulum

Any small fold of mucous membrane.

fren·u·lum

, pl. frenula (fren'yū-lŭm, -lă) [TA]
A small frenum or bridle.
See also: frenum
[Mod. L. dim. of L. frenum, bridle]

frenulum

(fren´ūlum).
n See frenum.

frenulum

pl. frenula [L.] a small fold of integument or mucous membrane that limits the movements of an organ or part.

clitoridal frenulum
a fold from the clitoridal fossa to the clitoris.
frenulum linguae
frenulum of tongue.
lingual frenulum
the vertical fold of mucous membrane under the tongue, attaching it to the floor of the mouth; called also frenulum linguae.
Enlarge picture
Lingual frenulum of the dog. By permission from Sack W, Wensing CJG, Dyce KM, Textbook of Veterinary Anatomy, Saunders, 2002
frenulum of lip
a median fold of mucous membrane connecting the inside of each lip to the corresponding gum.
penile preputial frenulum
thin ventral sheet of preputial skin and connective tissue forming a fold under the penis and connecting its ventral raphe with the preputial mucosa. Normally breaks down at the approach of puberty. Persistence of a part of the frenulum causes deviation and incomplete protrusion of the penis and inability to mate, is an inherited defect in cattle. Most cases can be satisfactorily corrected surgically.
superior medullary velum frenulum
a band lying in the superior medullary velum at its attachment to the inferior colliculi in the brain.
References in periodicals archive ?
The motor nerve net of the perradial frenula is also notable in that neuronal density appears greater than that of the velarium or subumbrella (based on qualitative assessments; Satterlie et al.
Here we provide a quantitative confirmation of network density differences in the subumbrella, velarium, and frenula within and between cubomedusan species, as part of a thorough examination of their ectodermal nervous system.
The perradial frenula are three-dimensional muscle sheets, oriented perpendicular to the 2-dimensional subumbrella and velarium.
The four perradial frenula are located below the nerve ring opposite the rhopalial niches.
Puncta were not as apparent in the frenula, but the density of neurites may have obscured them.
Initial evaluation of the motor nerve nets of the three muscle sheets indicated clear differences in the neuronal density, with the highest density in the frenula and the lowest in the subumbrella (Figs.
With regard to the anteriorized and the short and anteriorized frenula, the study states that in addition to the fact that the tongue is low on the floor of the mouth, the more anteriorly the frenulum is attached, the more limited the tongue movements will be, i.
Initially, the frenula were thought to be passive structural reinforcements, but upon closer examination, the circular musculature of the velarium appeared to turn 90 degrees, in a radial direction, on each face of the frenula.
The frenula are triangular muscular brackets that run in a radial direction from the velarium, tapering near the level of the center of the rhopalial niche.
Similarly, cubomedusae turn by altering the shape of the velarium (Gladfelter, 1973), but the mechanism of muscular control is unknown, although the structure of the velarial frenula may provide a clue.
The arrangement of muscle fibers on the frenula suggests that they are not passive buttresses.
Unfortunately, existing kinematic data (Gladfelter, 1973) do not focus on the frenula to see whether enhanced velarial contractions that produce directional nozzles are centered on these structures.

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