anterior commissure


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Related to anterior commissure: Posterior commissure, Hippocampal commissure

commissure

 [kom´ĭ-shūr]
1. a site of union of corresponding parts, such as the angle of the lips or eyelids.
2. the site of junction between adjacent cusps of a cardiac valve.
anterior commissure the band of fibers connecting the parts of the two cerebral hemispheres.
commissure of epithalamus a large fiber bundle that crosses the midline of the epithalamus just dorsal to the point where the cerebral aqueduct opens into the third ventricle.
middle commissure a band of gray matter joining the optic thalami; it develops as a secondary adhesion and may be absent.
posterior commissure commissure of epithalamus.

an·te·ri·or com·mis·sure

[TA]
a round bundle of nerve fibers that crosses the midline of the brain near the anterior limit of the third ventricle. It consists of a smaller anterior part (pars anterior commissurae anterioris [TA]), the fibers of which pass in part to the olfactory bulbs, and a larger posterior part (pars posterior commissurae anterioris [TA]), which interconnects the left and right temporal lobes.
Synonym(s): commissura anterior [TA]

anterior commissure

The anterior ligamentous attachment of the true vocal cords to the thyroid cartilage, which, because it lacks an internal perichondrium, is a common site of extension of squamous cell carcinomas from the anterior commissure.

an·te·ri·or com·mis·sure

(an-tēr'ē-ŏr kŏm'i-shŭr) [TA]
A round bundle of nerve fibers that crosses the midline of the brain near the anterior limit of the third ventricle. It consists of a smaller anterior part, the fibers of which pass in part to the olfactory bulbs, and a larger posterior part, which interconnects the left and right temporal lobes.
Synonym(s): precommissure.
[L. commissura anterior]

anterior commissure

A nerve fibre bundle running across the midline of the brain from one hemisphere to the other, just in front of the THIRD VENTRICLE.
References in periodicals archive ?
Significance of anterior commissure involvement in early glottic squamose cell carcinoma treated with trans-oral CO2 laser microsurgery.
5-cm lesion Browning et al, 1992 (7) Erythema and edema from vocal cord to anterior commissure Isaacson and Frable, 1996 (6) Bilateral edematous and erythematous vocal cords, exudative white vocal cord lesion McGregor et al, 2003 Verrucose vocal cord lesion Series (ref.
The anterior vocal fold was then mobilized bilaterally, and an anterior glottic web was created to reconstitute an anterior commissure and functionally eliminate the anterior portions of her vocal fold that had resisted multiple surgical attempts at treatment and remained symptomatic.
The two vocal cords meet anteriorly and are attached to the inner surface of the thyroid cartilage at about the level of the thyroid prominence (Adam's apple) this attachment is called the anterior commissure, the space in between two vocal cords is known as 'rima glottis' this is the narroyest part of entire upper airway in adults.
Shell weakly concavoconvex to almost biplanate, transverse subrectangular with maximum width slightly anterior to the hinge line; anterior commissure rectimarginate.
During this time the cerebral cortex, basal ganglia and anterior commissure are formed.
Laryngoscopic view was graded according to the method described by Cormack and Lehane (12) as grade 1 (full view of the glottis), grade 2 (glottis partly exposed, anterior commissure not seen), grade 3 (only epiglottis seen), or grade 4 (epiglottis not seen).
The data closely emulates specialized regions of the human cortex, corpus callosum, anterior commissure, amygdale and hippocampus.
As surveillance continued at 4-month intervals, the leukoplakia progressed to involve the anterior commissure and immediate subglottic area, which prompted repeat biopsies in October 2007 (figure).
There is lesser need of refocusing to visualise the subglottic area and there is better visualisation of anterior commissure by using angled endoscopes.
There was blunting of the anterior commissure, diffuse laryngeal thrush, and severe Reinke edema.

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