commissure


commissure
1. Angle or corner of the eye, lips, or labia. 2. A bundle of nerve fibers passing from one side to the other in the brain or spinal cord. SYN: commissura [TA].
- anterior c. [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. SYN: commissura anterior [TA].
- anterior gray c. [TA] See gray c..
- anterior labial c. [TA] the junction of the labia majora anteriorly at the mons pubis. SYN: commissura labiorum anterior [TA].
- anterior c. of the larynx the junction of the vocal cords anteriorly in the larynx.
- anterior white c. [TA] SYN: white c..
- c. of bulbs [TA] a narrow median band that connects the two masses of erectile tissue (the bulbus vestibuli) on either side of the vaginal orifice. SYN: commissura bulborum [TA], c. of vestibular bulb, intermediate part of vestibular bulb, pars intermedia commissurae bulborum.
- c. of cerebral hemispheres SYN: corpus callosum.
- dorsal supraoptic c. SYN: commissura supraoptica dorsalis.
- c. of fornix [TA] SYN: commissura fornicis.
- Ganser c. SYN: commissura supraoptica dorsalis.
- gray c. [TA] narrow bands of gray substance spanning the midline dorsal to the central canal (posterior gray c. [TA], commissura griesa posterior [TA]) and ventral to the central canal (anterior gray c. [TA], commissura grisea anterior [TA])
- Gudden c. SYN: commissura supraoptica dorsalis.
- c. of habenulae SYN: commissura habenularum.
- habenular c. [TA] SYN: commissura habenularum.
- hippocampal c. SYN: commissura fornicis.
- c. of inferior colliculus [TA] nerve fibers on the midline between the two inferior colliculi connecting the colliculi and containing some fibers originating from nontectal nuclei.
- labial c. [TA] junction of upper and lower lip which occurs at corner of mouth. SEE ALSO: angle of mouth.
- lateral palpebral c. [TA] the union of the upper and lower eyelids adjacent to the lateral angle. SYN: commissura lateralis palpebrum [TA], commissura palpebrarum lateralis.
- c. of lips the junction of the lips lateral to the angle of the mouth. SYN: commissura labiorum [TA], junction of lips.
- medial palpebral c. [TA] the union of the upper and lower eyelids adjacent to the medial angle. SYN: commissura medialis palpebrum [TA], commissura palpebrarum medialis.
- Meynert c. SYN: commissura supraoptica dorsalis.
- posterior gray c. [TA] See gray c..
- posterior labial c. [TA] a slight fold uniting the labia majora posteriorly in front of the anus. SYN: commissura labiorum posterior [TA].
- posterior c. of the larynx SYN: interarytenoid fold.
- c. of superior colliculus [TA] nerve fibers interconnecting corresponding and noncorresponding portions of the two superior colliculi across the midline; may contain fibers originating outside the tectum. SYN: brachium colliculi superioris [TA].
- ventral white c. [TA] SYN: white c..
- c. of vestibular bulb SYN: c. of bulbs.
- Wernekinck c. the decussation of the brachia conjunctiva before their entrance into the red nucleus of the tegmentum.
- white c. a narrow band of white matter that crosses the midline of the spinal cord dorsal to the central canal and posterior gray c. (posterior white c. [TA]) and ventral to the central canal and the anterior gray c. (anterior white c. [TA]). SYN: anterior white c. [TA], commissura alba anterior [TA], commissura alba posterior [TA], ventral white column [TA], ventral white c. [TA], commissura ventralis alba.

* * *

com·mis·sure 'käm-ə-.shu̇(ə)r n
1) a point or line of union or junction between two anatomical parts (as the lips at their angles or adjacent heart valves)
com·mis·su·ral .käm-ə-'shu̇r-əl adj

* * *

n.
1. a bundle of nerve fibres that crosses the midline of the central nervous system, often connecting similar structures on each side.
2. any other tissue connecting two similar structures.

* * *

com·mis·sure (komґĭ-shər) 1. a site of union of corresponding parts; see also commissura. 2. the site of junction between adjacent cusps of a heart valve.

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • commissure — [ kɔmisyr ] n. f. • 1314; lat. commissura, de committere « joindre ensemble » 1 ♦ Anat. Point de jonction de deux parties. Commissure blanche, grise de la moelle. Commissures du cerveau. Adj. COMMISSURAL, ALE, AUX . 2 ♦ Cour. Commissures (des… …   Encyclopédie Universelle

  • commissure — COMMISSURE. sub. fém. Terme didactique, qui se dit Du point d union de quelques parties du corps humain. La commissure des nerfs optiques. La commissure des lèvres …   Dictionnaire de l'Académie Française 1798

  • Commissure — Com*mis sure (? or ?; 134 6), n. [L. commissura a joining together: cf. F. commissure. See {Commit}.] 1. A joint, seam, or closure; the place where two bodies, or parts of a body, meet and unite; an interstice, cleft, or juncture. [1913 Webster]… …   The Collaborative International Dictionary of English

  • commissure — [käm′ə shoor΄] n. [ME & OFr < L commissura < commissus, pp. of committere: see COMMIT] 1. a line where two parts join or unite; joint; seam 2. Anat. the area where symmetrical parts join, as of the lips or of the brain s hemispheres… …   English World dictionary

  • Commissure — A commissure is the place where two things are joined. The term is used especially in the fields of anatomy and biology. In anatomy, commissure refers to a bundle of nerve fibers that cross the midline at their level of origin or entry (as… …   Wikipedia

  • COMMISSURE — s. f. T. d Anat., qui se dit Du point d union de quelques parties du corps. La commissure des nerfs optiques. La commissure des lèvres, des paupières …   Dictionnaire de l'Academie Francaise, 7eme edition (1835)

  • COMMISSURE — n. f. Point de jonction de deux ou plusieurs parties. En termes d’Anatomie. La commissure des nerfs optiques, La commissure des lèvres, des paupières. En termes d’Architecture, Les commissures d’un pilier …   Dictionnaire de l'Academie Francaise, 8eme edition (1935)

  • Commissure — En anatomie, une commissure est un moyen d union entre deux parties, par exemple la commissure du cerveau ou des lèvres. Lien interne Corps calleux Portail de la médecine Catégorie : Vo …   Wikipédia en Français

  • commissure — (ko mi ssu r ) s. f. 1°   Terme d anatomie. Point de jonction de certaines parties. La commissure des lèvres. 2°   Terme d architecture. Joint des pierres. Des ornements propres à cacher les commissures des colonnes. 3°   Terme de musique. S est… …   Dictionnaire de la Langue Française d'Émile Littré

  • commissure — noun Etymology: Middle English, from Middle French or Latin; Middle French, from Latin commissura a joining, from commissus, past participle Date: 15th century 1. a point or line of union or junction especially between two anatomical parts (as… …   New Collegiate Dictionary


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.